Matt Hopkins

R&D S&E, Physics

R&D S&E, Physics

Biography

Matthew M. Hopkins has been a technical staff member at Sandia for over 20 years. He is currently in the Applied Optical and Plasma Sciences organization. He has led multifunctional technical teams, developed models, and advanced the state of the art in computational science in low temperature plasma physics and complex, multiphase, multiphysics fluid dynamics. To a great extent, experimental and computational efforts are integrated to provide validation data and identification of important phenomena.

Current research interests are concentrated in the areas of vacuum and gaseous discharges, especially understanding coupled plasma-surface interaction in these environments, and plasma sheath/boundary dynamics. Past research areas include multiphase and multiphysics transport, laser ablation, fluid-based chemical, biological, and nuclear sensors, non-Newtonian flows (suspension rheology), stability analysis, error analysis, mathematical biology, and pattern formation.

He is a PI of Sandia’s Low-Temperature Plasma Research Facility (PRF), a founding organizer of the International Workshop on Mechanisms of Vacuum Arcs (MeVArc), a member of the Permanent International Scientific Committee for the International Symposium on Discharge and Electrical Insulation in Vacuum (ISDEIV), and a team member of LXCat, a volunteer community organization collecting and sharing fundamental plasma chemistry data for the low temperature plasma community. He has greatly enjoyed working with postdocs and students throughout his career.

Research Interests

  • Computational modeling and simulation of non-equilibrium plasma phenomena
  • Discharge physics: vacuum, low-pressure, atmospheric pressure, higher pressures, including surface (vacuum-insulator)
  • Surface coupling to plasmas: secondary yields from ion, electrons, photons
  • Electron and neutral surface emission (field, thermionic, etc.)
  • Verification and validation methods for plasma simulation, especially PIC-DSMC

Education

PhD, Mathematics 
August 1997
Tulane University

Masters Certificate, Project Management  
November 2010
George Washington University

MS, Mathematics                                     
December 1991
Tulane University

BS, Computer Science                                      
May 1990
George Mason University

Publications

  • Steiner, A.M., Burnette, M., Flynn, M.C., Felix, J., Hopkins, M.M., Lietz, A.M., Stephens, J.C., Mitchell, M.D., & Mitchell, M.D. (2024). Investigation of SF6 Alternatives in Spark Gap Switches for GWP Reduction. https://www.osti.gov/biblio/2430200 Publication ID: 125264
  • Beving, L.P., Hopkins, M.M., Baalrud, S.D., & Baalrud, S.D. (2023). Electron-field instability: Excitation of electron plasma waves by an electric field. Physics of Plasmas, 30(11). https://doi.org/10.1063/5.0156041 Publication ID: 123296
  • Hopkins, M.M., Moore, C.H., Hattar, K., & Hattar, K. (2023). In-situ Electrical Discharging Studied within a Transmission Electron Microscope [Conference Proceeding]. https://www.osti.gov/biblio/2431981 Publication ID: 130860
  • Hopkins, M.M., Brooks, W., Clark, R., Dickens, J., Echo, Z.S., Goeke, R.S., Mankowski, J., Moore, C.H., Mounho, M., Neuber, A., Stephens, J., & Stephens, J. (2023). Progress Understanding Anode-Initiated Vacuum Insulator Flashover [Conference Poster]. https://doi.org/10.2172/2431175 Publication ID: 128076
  • Fierro, A.S., Hardin, T.J., Lietz, A.M., Hopkins, M.M., Belianinov, A.A., Bentz, B.Z., & Bentz, B.Z. (2023). Large RF plasma data set for training plasma processing machine learning models [Conference Presenation]. https://doi.org/10.2172/2431425 Publication ID: 128988
  • Hopkins, M.M., Brooks, W., Clark, R., Echo, Z.S., Goeke, R.S., Moore, C.H., Mounho, M., Neuber, A., Stephens, J., Young, J.K., & Young, J.K. (2023). Investigations of Vacuum Insulator Flashover in Pulsed Power Systems [Conference Proceeding]. https://doi.org/10.23919/ISDEIV55268.2023.10200954 Publication ID: 129852
  • Lietz, A.M., Groenewald, R.E., Scherpelz, P., Hopkins, M.M., & Hopkins, M.M. (2023). Kinetic simulations of ignited mode cesium vapor thermionic converters. Journal of Applied Physics, 133(2). https://doi.org/10.1063/5.0117599 Publication ID: 80955
  • Hopkins, M.M., Brooks, W., Clark, R., Echo, Z.S., Goeke, R.S., Moore, C.H., Mounho, M., Neuber, A., Stephens, J., Young, J., & Young, J. (2023). Investigations of Vacuum Insulator Flashover in Pulsed Power Systems [Conference Presenation]. Proceedings – International Symposium on Discharges and Electrical Insulation in Vacuum, ISDEIV. https://doi.org/10.2172/2430947 Publication ID: 127268
  • Lietz, A.M., Yee, B.T., Musk, J., Moffat, H.K., Wiemann, D.K., Settecerri, T., Fergenson, D., Omana, M.A., Hopkins, M.M., & Hopkins, M.M. (2022). Laser-driven ionization mechanisms of aluminum for single particle aerosol mass spectrometry. Spectrochimica Acta – Part B Atomic Spectroscopy, 197. https://doi.org/10.1016/j.sab.2022.106543 Publication ID: 80357
  • Brooks, W., Clark, R., Young, J., Hopkins, M.M., Dickens, J., Neuber, A., & Neuber, A. (2022). Exploring the Basic Physical Mechanisms of Cathode- and Anode-Initiated High-Voltage Surface Flashover. IEEE Transactions on Plasma Science, 50(10), pp. 3361-3370. https://doi.org/10.1109/tps.2022.3171129 Publication ID: 80673
  • Sickafoose, S., Bentz, B.Z., Frank, J.H., Hansen, N., Hopkins, M.M., Kliewer, C., & Kliewer, C. (2022). SNL Plasma Research Facility (PRF) [Conference Presenation]. https://doi.org/10.2172/2005633 Publication ID: 119672
  • Hopkins, M.M., Baalrud, S.D., Beving, L.P., & Beving, L.P. (2022). How sheath properties change with gas pressure : [Conference Presenation]. https://doi.org/10.2172/2005674 Publication ID: 119836
  • Jindal, A.K., Moore, C.H., Fierro, A.S., Hopkins, M.M., & Hopkins, M.M. (2022). Full 3D Kinetic Modeling and Quantification of Positive Streamer Evolution in an Azimuthally Swept Pin-to-Plane Wedge Geometry. https://doi.org/10.2172/1888448 Publication ID: 80246
  • Hopkins, M.M., Moore, C.H., Kyritsakis, A., & Kyritsakis, A. (2022). Simulations of Cathode Plasma Expansion in Vacuum [Conference Poster]. https://doi.org/10.2172/2004674 Publication ID: 117528
  • Hopkins, M.M., Brooks, W., Clark, R., Echo, Z.S., Goeke, R.S., Moore, C.H., Mounho, M., Neuber, A., Stephens, J., Young, J., & Young, J. (2022). Mechanisms of Anode-Initiated Vacuum Insulator Flashover for Pulsed Power Applications [Conference Presenation]. https://doi.org/10.2172/2004707 Publication ID: 117660
  • Sickafoose, S., Bentz, B.Z., Frank, J.H., Hansen, N., Hopkins, M.M., Kliewer, C., Lietz, A.M., van Den Bekerom, D., & van Den Bekerom, D. (2022). Update on Sandia National Laboratories Plasma Research Facility [Conference Poster]. https://doi.org/10.2172/2004801 Publication ID: 118032
  • Moore, C.H., Bussmann, E., Berg, M., Ohta, T., Hopkins, M.M., & Hopkins, M.M. (2022). Exploring Dependencies of Work Function on Topography and the Application to Micron-scale Field Emission Model for PIC-DSMC Simulations [Conference Presenation]. https://doi.org/10.2172/2004806 Publication ID: 118052
  • Fierro, A., Hopkins, M.M., Hardin, T.J., Belianinov, A.A., Lietz, A.M., Youngman, K., Bentz, B.Z., & Bentz, B.Z. (2022). Analysis of a radiofrequency plasma reactor for etching (Poster) [Conference Poster]. https://doi.org/10.2172/2005244 Publication ID: 118436
  • Hopkins, M.M., Baalrud, S.D., Beving, L.P., & Beving, L.P. (2022). Simulations of the collisional Bohm criterion and edge-to-center density ratio over a range of gas pressure [Conference Presenation]. https://doi.org/10.2172/2005371 Publication ID: 118932
  • Beving, L.P., Hopkins, M.M., Baalrud, S.D., & Baalrud, S.D. (2022). How sheath properties change with gas pressure: modeling and simulation. Plasma Sources Science and Technology, 31(8). https://doi.org/10.1088/1361-6595/ac85d7 Publication ID: 80054
  • Echo, Z.S., Goeke, R.S., Hopkins, M.M., & Hopkins, M.M. (2022). Surface Charge Effects on Secondary Electron Emission from Dielectrics [Conference Poster]. https://doi.org/10.2172/2004132 Publication ID: 115780
  • Mounho, M., Young, J., Clark, R., Brooks, W., Neuber, A., Stephens, J., Hopkins, M.M., & Hopkins, M.M. (2022). Electrical diagnostics and nanosecond imaging of vacuum surface flashover [Conference Presenation]. https://doi.org/10.2172/2003493 Publication ID: 113292
  • Clark, R., Mounho, M., Brooks, W., Hopkins, M.M., Mankowski, J., Dickens, J., Stephens, J., Neuber, A., & Neuber, A. (2022). Study of anode-initiated surface flashover in vacuum with spatiotemporally resolved optical emission spectroscopy [Conference Presenation]. https://doi.org/10.2172/2003543 Publication ID: 113488
  • Brooks, W., Clark, R., Young, J., Hopkins, M.M., Dickens, J., Stephens, J., Neuber, A., & Neuber, A. (2022). A Second-Generation Experimental Apparatus for Direct Observation of Anode Initiated Vacuum Surface Flashover [Presentation]. https://www.osti.gov/biblio/2003563 Publication ID: 113568
  • Hopkins, M.M., Baalrud, S.D., Beving, L.P., & Beving, L.P. (2022). Simulations of the collisional Bohm criterion and edge-to-center density ratio over a range of gas pressure [Conference Presenation]. https://doi.org/10.2172/2003219 Publication ID: 112256
  • Lietz, A.M., Rauf, S., Kenney, J., Tian, P., Hopkins, M.M., & Hopkins, M.M. (2022). Particle-in-Cell Modeling of Low Pressure Capacitively Coupled Plasmas for High Aspect Ratio Etching. https://doi.org/10.2172/1853881 Publication ID: 80512
  • Bussmann, E., Smith, S.W., Scrymgeour, D., Brumbach, M.T., Lu, P., Dickens, S.M., Michael, J.R., Ohta, T., Hjalmarson, H.P., Schultz, P.A., Clem, P., Hopkins, M.M., Moore, C., & Moore, C. (2022). Atomic step disorder on polycrystalline surfaces leads to spatially inhomogeneous work functions. Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films, 40(2). https://doi.org/10.1116/6.0001729 Publication ID: 80753
  • Clark, R., Mounho, M., Brooks, W., Hopkins, M.M., Mankowski, J., Dickens, J., Stephens, J., Neuber, A., & Neuber, A. (2022). Study of Anode-Initiated Surface Flashover in Vacuum with Spatiotemporally Resolved Optical Emission Spectroscopy [Conference Presenation]. https://doi.org/10.2172/2001663 Publication ID: 107744
  • Mounho, M., Young, J., Clark, R., Brooks, W., Hopkins, M.M., Neuber, A., Stephens, J., & Stephens, J. (2022). Electrical diagnostics and nanosecond imaging of vacuum surface flashover [Conference Presenation]. https://doi.org/10.2172/2001679 Publication ID: 107804
  • Scherpelz, P., Groenewald, R.E., Zhu, K., Kieburtz, M., Ruof, N., Miller, P., Lietz, A.M., Hopkins, M.M., & Hopkins, M.M. (2022). High-Fidelity Particle-in-Cell Simulations of Thermionic Converters [Conference Presenation]. 2022 23rd International Vacuum Electronics Conference, IVEC 2022. https://doi.org/10.2172/2002466 Publication ID: 110784
  • Beving, L.P., Hopkins, M.M., Baalrud, S.D., & Baalrud, S.D. (2021). Simulations of ion heating due to ion-acoustic instabilities in presheaths. Physics of Plasmas, 28(12). https://doi.org/10.1063/5.0068179 Publication ID: 77144
  • Brooks, W., Clark, R., Stephens, J., Hopkins, M.M., Dickens, J., Neuber, A., & Neuber, A. (2021). Exploring the basic physical mechanisms of cathode and anode directed high voltage surface flashover [Conference Presenation]. https://doi.org/10.2172/1899693 Publication ID: 76895
  • Clark, R., Brooks, W., Hopkins, M.M., Mankowski, J., Stephens, J., Neuber, A., & Neuber, A. (2021). Temporally resolved light emission and optical emission spectroscopy of surface flashover in vacuum [Conference Presenation]. https://doi.org/10.2172/1899688 Publication ID: 76896
  • Young, J., Mounho, M., Clark, R., Brooks, W., Dickens, J., Mankowski, J., Neuber, A., Hopkins, M.M., & Hopkins, M.M. (2021). An experimental apparatus and diagnostics for the characterization of high-voltage surface flashover in large-scale pulsed power conditions [Conference Presenation]. https://doi.org/10.2172/1899691 Publication ID: 76897
  • Mounho, M., Young, J., Mankowski, J., Neuber, A., Stephens, J., Hopkins, M.M., & Hopkins, M.M. (2021). Characterization of a low-jitter Marx generator triggering system for time-resolved diagnostics application [Conference Poster]. https://doi.org/10.2172/1899690 Publication ID: 76898
  • Sickafoose, S., Bentz, B.Z., Frank, J.H., Hansen, N., Hopkins, M.M., Kliewer, C., Lietz, A.M., van Den Bekerom, D., & van Den Bekerom, D. (2021). SNL Plasma Research Facility (PRF) [Conference Presenation]. https://www.osti.gov/biblio/1890894 Publication ID: 76086
  • Lietz, A.M., Hopkins, M.M., Yee, B., Musk, J., Moffat, H.K., Wiemann, D.K., Settecerri, T., Fergenson, D., Omana, M.A., & Omana, M.A. (2021). Laser-Produced Aluminum Plasmas Expanding in an Applied Electric Field: Plasma Generation in Single Particle Aerosol Mass Spectrometers [Conference Presenation]. https://doi.org/10.2172/1891244 Publication ID: 76150
  • Lietz, A.M., Tian, P., Kenney, J., Rauf, S., Hopkins, M.M., & Hopkins, M.M. (2021). Particle-in-cell modeling of low pressure, high voltage capacitively coupled Ar plasmas [Conference Presenation]. https://doi.org/10.2172/1892454 Publication ID: 76284
  • Sickafoose, S., Bentz, B.Z., Frank, J.H., Hansen, N., Hopkins, M.M., Kliewer, C., Lietz, A.M., van Den Bekerom, D., & van Den Bekerom, D. (2021). Sandia National Laboratories Plasma Research Facility [Presentation]. https://www.osti.gov/biblio/1887347 Publication ID: 75651
  • Lietz, A.M., Groenewald, R., Scherpelz, P., Hopkins, M.M., & Hopkins, M.M. (2021). Simulations of Nonequilibrium Thermionic Cs Plasmas [Presentation]. https://www.osti.gov/biblio/1888411 Publication ID: 75808
  • Hopkins, M.M., Lietz, A.M., & Lietz, A.M. (2021). Sandia Low-Temperature Plasma Research Facility: Modeling & Simulation Update [Presentation]. https://www.osti.gov/biblio/1888389 Publication ID: 75816
  • Beving, L.P., Hopkins, M.M., Baalrud, S., & Baalrud, S. (2021). SIMULATIONS OF ION HEATING IN THE PRESHEATH DUE TO ION-ACOUSTIC INSTABILITIES [Conference Presenation]. https://doi.org/10.2172/1888419 Publication ID: 75818
  • Sickafoose, S., Bentz, B.Z., Frank, J.H., Hansen, N., Hopkins, M.M., Kliewer, C., Lietz, A.M., van Den Bekerom, D., & van Den Bekerom, D. (2021). SNL Plasma Research Facility [Presentation]. https://www.osti.gov/biblio/1888656 Publication ID: 75840
  • Sickafoose, S., Bentz, B.Z., Frank, J.H., Hansen, N., Hopkins, M.M., Kliewer, C., Lietz, A.M., van Den Bekerom, D., & van Den Bekerom, D. (2021). SNL Plasma Research Facility (PRF) [Conference Presenation]. https://doi.org/10.2172/1890881 Publication ID: 75935
  • Mankowski, M., Neuber, A., Stephens, J., Brooks, W., Clark, R., Young, J., Mounho, M., Hopkins, M.M., & Hopkins, M.M. (2021). Fundamental Study of High Electric Field Surface Flashover in Vacuum [Conference Presenation]. https://doi.org/10.2172/1883046 Publication ID: 75313
  • Lietz, A.M., Barnat, E., Nail, G.R., Roberds, N.A., Fierro, A.S., Yee, B.T., Moore, C.H., Clem, P., Hopkins, M.M., & Hopkins, M.M. (2021). High-fidelity modeling of breakdown in helium: Initiation processes and secondary electron emission. Journal of Physics D: Applied Physics, 54(33). https://doi.org/10.1088/1361-6463/ac0461 Publication ID: 78783
  • Hopkins, M.M. (2021). 3D Unstructured PIC-DSMC Simulation: Challenges and Examples [Presentation]. https://www.osti.gov/biblio/1871802 Publication ID: 78738
  • Fierro, A.S., Barnat, E., Hopkins, M.M., Moore, C.H., Radtke, G.A., Yee, B.T., & Yee, B.T. (2021). Challenges and opportunities in verification and validation of low temperature plasma simulations and experiments. European Physical Journal. D, Atomic, Molecular, Optical and Plasma Physics, 75(5). https://doi.org/10.1140/epjd/s10053-021-00088-6 Publication ID: 77447
  • Hopkins, M.M., Bussmann, E., Ohta, T., Jindal, A.K., Roberds, N.A., Moore, C., & Moore, C. (2021). Developing Field Emission Models Employing Nanoscale Surface Characterization [Conference Presenation]. https://doi.org/10.2172/1881673 Publication ID: 78154
  • Carbone, E., Graef, W., Hagelaar, G., Boer, D., Hopkins, M.M., Stephens, J.C., Yee, B.T., Pancheshnyi, S., van Dijk, J., Pitchford, L., & Pitchford, L. (2021). Data needs for modeling low-temperature non-equilibrium plasmas: The LXCat project, history, perspectives and a tutorial. Atoms, 9(1), pp. 1-40. https://doi.org/10.3390/atoms9010016 Publication ID: 75051
  • Moore, C.H., Bussmann, E., Ohta, T., Jindal, A.K., Roberds, N.A., Hopkins, M.M., & Hopkins, M.M. (2021). Micron-scale Field Emission Model for PIC-DSMC Simulations Based on Nanoscale Surface Characterization [Conference Poster]. https://doi.org/10.2172/1855332 Publication ID: 77569
  • Fierro, A.S., Lehr, J., Yee, B., Barnat, E., Moore, C.H., Hopkins, M.M., Clem, P., & Clem, P. (2021). Study of vacuum ultraviolet emission in helium and helium/nitrogen mixtures. Journal of Applied Physics, 129(7). https://doi.org/10.1063/5.0033412 Publication ID: 76828
  • Beving, L.P., Hopkins, M.M., Baalrud, S.D., & Baalrud, S.D. (2021). Simulating Boundary Region Plasma Instabilities. https://doi.org/10.2172/1765076 Publication ID: 75963
  • Clark, R., Young, J., Brooks, W., Hopkins, M.M., Mankowski, J., Stephens, J., Neuber, A., & Neuber, A. (2021). Temporally resolved light emission and optical emission spectroscopy of surface flashover in vacuum [Conference Proceeding]. IEEE International Pulsed Power Conference. https://doi.org/10.1109/PPC40517.2021.9733139 Publication ID: 107692
  • Lietz, A.M., Barnat, E., Yee, B.T., Hopkins, M.M., & Hopkins, M.M. (2020). ESTIMATING SECONDARY ELECTRON YIELDS USING PLASMA DISCHARGE MODELING [Conference Poster]. https://doi.org/10.2172/1834987 Publication ID: 72076
  • Hopkins, M.M., Jindal, A.K., Bussmann, E., Ohta, T., Berg, M., Thomas, C., Scrymgeour, D., Clem, P., Moore, C.H., & Moore, C.H. (2020). Employing Nanoscale Surface Characterizations in a Field Emission Model [Conference Poster]. https://doi.org/10.2172/1835000 Publication ID: 72089
  • Yee, B.T., Hopkins, M.M., & Hopkins, M.M. (2020). Particle Methods for Revealing Kinetic Plasma Behavior [Conference Presenation]. https://doi.org/10.2172/1825618 Publication ID: 71168
  • Beving, L.P., Hopkins, M.M., Baalrud, S., & Baalrud, S. (2020). Simulation of ion-acoustic wave excitation reflection and wave-particle scattering in the presheath [Conference Presenation]. https://doi.org/10.2172/1825602 Publication ID: 71198
  • Lietz, A.M., Musk, J., Hopkins, M.M., Yee, B.T., Moffat, H.K., Wiemann, D.K., Settecerri, T., Omana, M.A., & Omana, M.A. (2020). Ionization Mechanisms in a Laser-Produced Plasma for Single Particle Aerosol Mass Spectrometers [Conference Presenation]. https://doi.org/10.2172/1825975 Publication ID: 71224
  • Hopkins, M.M. (2020). State of the Art in Validation for Low Temperature Plasma Simulations and Experiments [Conference Poster]. https://www.osti.gov/biblio/1822622 Publication ID: 70959
  • Yee, B.T., Hopkins, M.M., & Hopkins, M.M. (2020). SIMPIC: A Simple Particle-in-Cell Code [Conference Presenation]. https://doi.org/10.2172/1824734 Publication ID: 71105
  • Schweiger, I., Hopkins, M.M., Barnat, E., Keidar, M., & Keidar, M. (2020). Theoretical and experimental study of breakdown delay time in pulse discharge [Conference Poster]. Proceedings – International Symposium on Discharges and Electrical Insulation in Vacuum, ISDEIV. https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85125561336&origin=inward Publication ID: 72574
  • Moore, C.H., Jindal, A.K., Bussmann, E., Ohta, T., Berg, M., Thomas, C., Clem, P., Hopkins, M.M., & Hopkins, M.M. (2020). Progress in micron-scale field emission models based on nanoscale surface characterization for use in PIC-DSMC vacuum arc simulations [Conference Presenation]. Proceedings – International Symposium on Discharges and Electrical Insulation in Vacuum, ISDEIV. https://doi.org/10.2172/1888975 Publication ID: 75866
  • Yee, B.T., Moore, C.H., Hopkins, M.M., & Hopkins, M.M. (2019). Advancing the Predictive Understanding of Low Temperature Plasmas. https://doi.org/10.2172/1574409 Publication ID: 66300
  • Hopkins, M.M., Moore, C.H., Yee, B.T., Bell, K., Fierro, A., & Fierro, A. (2019). Employing Reduced Chemistry Models on E-Beam/Gas Systems [Conference Poster]. https://www.osti.gov/biblio/1642852 Publication ID: 65728
  • Moore, C.H., Jindal, A.K., Bussmann, E., Ohta, T., Berg, M., Thomas, C., Scrymgeour, D., Clem, P., Hopkins, M.M., & Hopkins, M.M. (2019). Field Emission Model for PIC-DSMC Simulations Based on Nanoscale Surface Characterization [Conference Poster]. https://www.osti.gov/biblio/1641939 Publication ID: 64793
  • Jindal, A.K., Moore, C.H., Bussmann, E., Ohta, T., Berg, M., Thomas, C., Scrymgeour, D., Clem, P., Hopkins, M.M., & Hopkins, M.M. (2019). Modeling the Role of Beta on Vacuum Field Emission in PIC DSMC Simulations: Scalilng from Nano to Meso Scale [Conference Poster]. https://www.osti.gov/biblio/1641970 Publication ID: 64846
  • Fierro, A., Lehr, J., Moore, C.H., Yee, B.T., Barnat, E., Clem, P., Hopkins, M.M., & Hopkins, M.M. (2019). Photoionization and photoemission in helium and helium/nitrogen mixtures [Conference Poster]. https://www.osti.gov/biblio/1641121 Publication ID: 69672
  • Hopkins, M.M., Moore, C.H., Bell, K., Fierro, A., Yee, B.T., & Yee, B.T. (2019). Impact of reduced cross section sets on e-beam interaction with Ar [Conference Poster]. https://www.osti.gov/biblio/1641129 Publication ID: 69673
  • Jindal, A.K., Moore, C., Fierro, A., Hopkins, M.M., & Hopkins, M.M. (2019). Quantifying Streamer Dynamics for Azimuthally Swept 3D Wedges in Pin-to-Plane PIC-DSMC Simulations [Conference Poster]. https://www.osti.gov/biblio/1640917 Publication ID: 69342
  • Moore, C.H., Jindal, A.K., Fierro, A., Cartwright, K.L., Hopkins, M.M., & Hopkins, M.M. (2019). PIC-DSMC numerical grid heating in collisional plasmas: Application to streamer discharge simulations [Conference Poster]. https://www.osti.gov/biblio/1640960 Publication ID: 69401
  • Fierro, A.S., Barnat, E., Moore, C.H., Hopkins, M.M., Clem, P., & Clem, P. (2019). Kinetic simulation of a low-pressure helium discharge with comparison to experimental measurements. Plasma Sources Science and Technology, 28(5). https://doi.org/10.1088/1361-6595/ab18e1 Publication ID: 68299
  • Fierro, A.S., Yee, B.T., Hopkins, M.M., Robinson, A.C., Laity, G., & Laity, G. (2019). Numerical study of a coaxial electron sheath [Conference Poster]. https://www.osti.gov/biblio/1640224 Publication ID: 68858
  • Hopkins, M.M. (2019). Collisional e-Beam Modeling [Presentation]. https://www.osti.gov/biblio/1644572 Publication ID: 67627
  • Moore, C.H., Medina, B., Cartwright, K.L., Bettencourt, M.T., Hopkins, M.M., Yee, B.T., Bell, K., & Bell, K. (2019). Status report on EMPIRE simulations of RKA [Presentation]. https://www.osti.gov/biblio/1644592 Publication ID: 67664
  • Roberds, N.A., Hopkins, M.M., Yee, B.T., Fierro, A.S., & Fierro, A.S. (2019). Modeling DC Electrical Breakdown Using a Reduced Emission Spectrum for Trapped Radiation [Conference Poster]. https://www.osti.gov/biblio/1582176 Publication ID: 64173
  • Jindal, A.K., Moore, C.H., Fierro, A.S., Hopkins, M.M., & Hopkins, M.M. (2018). 3D Streamer Evolution in an Azimuthally Swept Pin-To-Plane Wedge Geometry Using a PIC-DSMC Code [Conference Poster]. https://www.osti.gov/biblio/1592367 Publication ID: 59989
  • Yee, B.T., Roberds, N.A., Barnat, E., Hopkins, M.M., & Hopkins, M.M. (2018). Surface photon flux dynamics during breakdown initiation [Conference Poster]. https://www.osti.gov/biblio/1594673 Publication ID: 60078
  • Fierro, A.S., Moore, C.H., Yee, B.T., Hopkins, M.M., & Hopkins, M.M. (2018). Three-dimensional kinetic modeling of streamer propagation in a nitrogen/helium gas mixture. Plasma Sources Science and Technology, 27(10). https://doi.org/10.1088/1361-6595/aae055 Publication ID: 58966
  • Hopkins, M.M. (2018). Slides for GEC workshop presentation by Mikhail Benilov [Conference Poster]. https://www.osti.gov/biblio/1876716 Publication ID: 59565
  • Fierro, A.S., Moore, C.H., Hopkins, M.M., Barnat, E., Clem, P., & Clem, P. (2018). Numerical study of photoionization of nitrogen by molecular and atomic helium emission [Conference Poster]. https://www.osti.gov/biblio/1592557 Publication ID: 59947
  • Hopkins, M.M., Fierro, A.S., Nail, G., Barnat, E., & Barnat, E. (2018). The Role of Metastables in Discharge Evolution [Conference Poster]. https://www.osti.gov/biblio/1592370 Publication ID: 59972
  • Fierro, A.S., Moore, C.H., Hopkins, M.M., Barnat, E., Clem, P., & Clem, P. (2018). Influence of photon and ion induced secondary yields on transient plasma formation [Conference Poster]. https://doi.org/10.1109/DEIV.2018.8537027 Publication ID: 58965
  • Hopkins, M.M., Berg, M., Bussmann, E., Smith, S., Scrymgeour, D., Ohta, T., Clem, P., Moore, C.H., & Moore, C.H. (2018). Detailed Characterization of Surface Structure and Influence on Field Emission [Conference Poster]. https://doi.org/10.1109/DEIV.2018.8536891 Publication ID: 59001
  • Hopkins, M.M. (2018). The Tyranny of Non-Ideal Surface Features in Vacuum Field Emission [Conference Poster]. https://www.osti.gov/biblio/1569125 Publication ID: 59002
  • Moore, C.H., Pouvesle, J., Robert, E., Bourdon, A., Fierro, A.S., Jindal, A.K., Hopkins, M.M., & Hopkins, M.M. (2018). PIC-DSMC Simulations of Ultra-fast Pin-to-Plane Discharge in Air [Conference Poster]. https://www.osti.gov/biblio/1569808 Publication ID: 63073
  • Bussmann, E., Ohta, T., Scrymgeour, D., Brumbach, M.T., Smith, S., Hjalmarson, H.P., Schultz, P.A., Clem, P., Hopkins, M.M., Moore, C.H., & Moore, C.H. (2018). Workfunction of Pt thin films with disorder [Conference Poster]. https://www.osti.gov/biblio/1526804 Publication ID: 62579
  • Bussmann, E., Ohta, T., Scrymgeour, D., Brumbach, M.T., Smith, S., Hjalmarson, H.P., Schultz, P.A., Clem, P., Hopkins, M.M., Moore, C.H., Berg, M., & Berg, M. (2018). Field emission from Pt thin films with disorder [Conference Poster]. https://www.osti.gov/biblio/1526805 Publication ID: 62580
  • Jindal, A.K., Moore, C.H., Fierro, A.S., Hopkins, M.M., & Hopkins, M.M. (2018). Investigating Streamer Propagation Physics in 2D and 3D Pin-to-Plane Geometries Using a PIC-DSMC Code [Conference Poster]. https://www.osti.gov/biblio/1529787 Publication ID: 62744
  • Moore, C.H., Hopkins, M.M., Fierro, A.S., Yee, B.T., & Yee, B.T. (2018). High Fidelity 3D Simulations of Discharge in Helium/Nitrogen Including Photonic Effects [Conference Poster]. https://www.osti.gov/biblio/1530939 Publication ID: 62815
  • Fierro, A.S., Barnat, E., Moore, C.H., Hopkins, M.M., & Hopkins, M.M. (2018). Controlled Investigation of Electrostatic Discharge in Air and Nitrogen Environments [Conference Poster]. https://www.osti.gov/biblio/1530943 Publication ID: 62823
  • Fierro, A.S., Moore, C.H., Hopkins, M.M., Barnat, E., Clem, P., & Clem, P. (2018). Influence of photon and ion induced secondary yields on transient plasma formation [Conference Poster]. https://doi.org/10.1109/DEIV.2018.8537027 Publication ID: 62870
  • Hopkins, M.M., Berg, M., Bussmann, E., Smith, S., Scrymgeour, D., Ohta, T., Clem, P., Moore, C.H., & Moore, C.H. (2018). Detailed characterization of surface structure and influence on field emission [Conference Poster]. https://doi.org/10.1109/DEIV.2018.8536891 Publication ID: 62872
  • Bussmann, E., Smith, S., Scrymgeour, D., Ohta, T., Hjalmarson, H.P., Schultz, P.A., Clem, P., Hopkins, M.M., Moore, C.H., & Moore, C.H. (2018). CHARACTERIZING THE INFLUENCE OF ELECTRODE SURFACE STRUCTURE ON FIELD EMISSION [Conference Poster]. https://www.osti.gov/biblio/1515636 Publication ID: 62162
  • Bussmann, E., Berg, M., Scrymgeour, D., Brumbach, M.T., Ohta, T., Smith, S., Hjalmarson, H.P., Schultz, P.A., Clem, P., Hopkins, M.M., Moore, C.H., & Moore, C.H. (2018). Field emission from Pt thin films with disorder [Conference Poster]. https://www.osti.gov/biblio/1515739 Publication ID: 62178
  • Fierro, A.S., Moore, C.H., Chow, W.W., Hopkins, M.M., & Hopkins, M.M. (2018). Study of a low-pressure high voltage switch triggered by laser-surface interaction [Conference Poster]. https://www.osti.gov/biblio/1515755 Publication ID: 62188
  • Schultz, P.A., Hjalmarson, H.P., Bussmann, E., Hopkins, M.M., Smith, S., Clem, P., Scrymgeour, D., Berg, M., Ohta, T., Moore, C.H., & Moore, C.H. (2018). Computing properties of Pt surfaces for understanding electron emission [Conference Poster]. https://www.osti.gov/biblio/1518545 Publication ID: 62213
  • Moore, C.H., Berg, M., Bussmann, E., Ohta, T., Scrymgeour, D., Smith, S., Schultz, P.A., Hjalmarson, H.P., Clem, P., Hopkins, M.M., & Hopkins, M.M. (2018). Advancing electrode models for PIC-DSMC simulation of vacuum discharge between real surfaces [Conference Poster]. https://www.osti.gov/biblio/1523774 Publication ID: 62270
  • Fierro, A.S., Laity, G., Jennings, C.A., Bennett, N.L., Hess, M.H., Hutsel, B.T., Hopkins, M.M., Robinson, A.C., Pointon, T., Vandevender, J.P., Cartwright, K.L., & Cartwright, K.L. (2018). Developing a benchmark example of magnetically insulated transmission line current loss [Conference Poster]. https://www.osti.gov/biblio/1524846 Publication ID: 62375
  • Moore, C.H., Berg, M., Brumbach, M.T., Bussmann, E., Clem, P., Hjalmarson, H.P., Hopkins, M.M., Schultz, P.A., Scrymgeour, D., Smith, S., & Smith, S. (2018). Modeling field emission from real surfaces [Presentation]. https://www.osti.gov/biblio/1506577 Publication ID: 61458
  • Bussmann, E., Smith, S., Scrymgeour, D., Ohta, T., Hjalmarson, H.P., Schultz, P.A., Clem, P., Hopkins, M.M., Moore, C.H., & Moore, C.H. (2018). CHARACTERIZING THE INFLUENCE OF ELECTRODE SURFACE STRUCTURE ON FIELD EMISSION [Conference Poster]. https://www.osti.gov/biblio/1575338 Publication ID: 61216
  • Berg, M., Hjalmarson, H.P., Scrymgeour, D., Brumbach, M.T., Schultz, P.A., Clem, P., Hopkins, M.M., Moore, C.H., Ohta, T., Smith, S., Bussmann, E., & Bussmann, E. (2018). Work function of platinum thin films with disorder [Conference Poster]. https://www.osti.gov/biblio/1503439 Publication ID: 61226
  • Hopkins, M.M. (2017). Modeling e-Beam Interaction with Argon in 1D [Presentation]. https://www.osti.gov/biblio/1485720 Publication ID: 54581
  • Hopkins, M.M., Yee, B.T., Baalrud, S.D., Scheiner, B., Barnat, E., & Barnat, E. (2017). Locking the Plasma Potential with an Anodic Surface [Conference Poster]. https://www.osti.gov/biblio/1481722 Publication ID: 54064
  • Yee, B.T., Scheiner, B., Baalrud, S.D., Barnat, E., Hopkins, M.M., & Hopkins, M.M. (2017). Properties of the electron sheath in low temperature plasmas [Conference Poster]. https://www.osti.gov/biblio/1510698 Publication ID: 54081
  • Tang, R., Barnat, E., Fierro, A.S., Hopkins, M.M., & Hopkins, M.M. (2017). Investigation of Discharge Processes in a High-Pressure Pulsed Arc Discharge Environment for Model Verification [Conference Poster]. https://www.osti.gov/biblio/1511130 Publication ID: 54193
  • Moore, C.H., Fierro, A.S., Pouvesle, J., Robert, E., Bourdon, A., Jorgenson, R.E., Jindal, A.K., Hopkins, M.M., & Hopkins, M.M. (2017). Kinetic Unstructured Finite Element PIC-DSMC Simulation of Ultra-Fast Pin-to-Plane Discharge in Air [Conference Poster]. https://www.osti.gov/biblio/1483166 Publication ID: 54232
  • Barnat, E., Yee, B.T., Hopkins, M.M., Scheiner, B., Baalrud, S., & Baalrud, S. (2017). Experimental observations on the characteristics of an anode spot onset [Conference Poster]. https://www.osti.gov/biblio/1483156 Publication ID: 54315
  • Scheiner, B., Barnat, E., Baalrud, S.D., Hopkins, M.M., Yee, B.T., & Yee, B.T. (2017). Theory and simulation of anode spots in low pressure plasmas. Physics of Plasmas, 24(11). https://doi.org/10.1063/1.4999477 Publication ID: 57894
  • Fierro, A.S., Moore, C.H., Chow, W.W., Biedermann, L.B., Hopkins, M.M., & Hopkins, M.M. (2017). Simulation of a laser triggered vacuum switch [Conference Poster]. https://www.osti.gov/biblio/1481355 Publication ID: 53988
  • Fierro, A.S., Barnat, E., Moore, C.H., Yee, B.T., Hopkins, M.M., & Hopkins, M.M. (2017). Kinetic simulation of helium emission spectra compared against experimental results [Conference Poster]. https://www.osti.gov/biblio/1470912 Publication ID: 58411
  • Hopkins, M.M., Fierro, A.S., Moore, C.H., Yee, B.T., & Yee, B.T. (2017). Fully Resolved 3D Kinetic Simulation of Atmospheric Pressure Streamer Propagation with Discrete Photons [Conference Poster]. https://www.osti.gov/biblio/1471965 Publication ID: 58528
  • Moore, C.H., Fierro, A.S., Jorgenson, R.E., Jindal, A.K., Clem, P., Hopkins, M.M., & Hopkins, M.M. (2017). Kinetic simulation of breakdown in gaps with and without dielectric particles [Conference Poster]. https://www.osti.gov/biblio/1468888 Publication ID: 58265
  • Chow, W.W., Moore, C.H., Biedermann, L.B., Hopkins, M.M., Dagel, D., Cartwright, K.L., & Cartwright, K.L. (2017). Carrier dynamics model for laser-solid interactions. https://doi.org/10.2172/1596194 Publication ID: 105088
  • Hopkins, M.M., Scheiner, B., Barnat, E., Yee, B.T., Baalrud, S.D., & Baalrud, S.D. (2017). The Influence of a Positively Biased Electrode [Conference Poster]. https://www.osti.gov/biblio/1460262 Publication ID: 57196
  • Fierro, A.S., Barnat, E., Moore, C.H., Hopkins, M.M., & Hopkins, M.M. (2017). Developing a kinetic approach to radiation transport and its interaction in He/N2 ionization waves [Presentation]. https://www.osti.gov/biblio/1458241 Publication ID: 56771
  • Fierro, A.S., Laity, G., Moore, C.H., Hopkins, M.M., Tang, R., Cartwright, K.L., Lamppa, D.C., Hutsel, B.T., Hess, M.H., Vandevender, J.P., & Vandevender, J.P. (2017). Exploring Current Loss Mechanisms on the Z Accelerator using PIC/DSMC Methods [Conference Poster]. https://www.osti.gov/biblio/1456734 Publication ID: 56828
  • Fierro, A.S., Barnat, E., Moore, C.H., Hopkins, M.M., & Hopkins, M.M. (2017). Developing a kinetic approach to radiation transport and its interaction in He/N2 ionization waves [Presentation]. https://www.osti.gov/biblio/1806460 Publication ID: 57115
  • Fierro, A.S., Moore, C.H., Yee, B.T., Hopkins, M.M., & Hopkins, M.M. (2017). Three-dimensional wedge simulation of an ionization wave in nitrogen/helium gas [Conference Poster]. https://www.osti.gov/biblio/1457974 Publication ID: 56319
  • Barnat, E., Fierro, A.S., Hopkins, M.M., & Hopkins, M.M. (2017). DEVELOPMENT OF LASER-COLLISION INDUCED FLUORESCENCE FOR ATMOSPHERIC PRESSURE PLASMA GENERATED IN HELIUM ATMOSPHERES [Conference Poster]. https://www.osti.gov/biblio/1367206 Publication ID: 56371
  • Moore, C.H., Fierro, A.S., Jorgenson, R.E., Hjalmarson, H.P., Jindal, A.K., Hopkins, M.M., Clem, P., Biedermann, L.B., & Biedermann, L.B. (2017). Kinetic simulation of breakdown for gaps with and without dielectric particles [Conference Poster]. https://www.osti.gov/biblio/1367296 Publication ID: 56453
  • Tang, R., Barnat, E., Fierro, A.S., Hopkins, M.M., & Hopkins, M.M. (2017). Characteristics of a High-Pressure Pulsed Arc Discharge Environment for Model Verification [Conference Poster]. https://www.osti.gov/biblio/1458036 Publication ID: 56535
  • Hopkins, M.M., Bussmann, E., Smith, S., Scrymgeour, D., Brumbach, M.T., Hjalmarson, H.P., Schultz, P.A., Clem, P., Moore, C.H., & Moore, C.H. (2017). Vacuum Field Emission Models Measurements and Simulations [Conference Poster]. https://www.osti.gov/biblio/1429166 Publication ID: 55395
  • Moore, C.H., Fierro, A.S., Hopkins, M.M., & Hopkins, M.M. (2017). Model for Triggered Vacuum Switches [Conference Poster]. https://www.osti.gov/biblio/1429258 Publication ID: 55420
  • Fierro, A.S., Moore, C.H., Yee, B.T., Hopkins, M.M., & Hopkins, M.M. (2017). Radiation transport in kinetic simulations and the influence of photoemission on electron current in self-sustaining discharges. Journal of Physics D: Applied Physics, 50(6). https://doi.org/10.1088/1361-6463/aa506c Publication ID: 47887
  • Manginell, R., Sillerud, C., Hopkins, M.M., Yee, B.T., Moorman, M.W., Schwindt, P., Anderson, J.M., Pfeifer, N.B., & Pfeifer, N.B. (2016). Fundamental Scaling of Microplasmas and Tunable UV Light Generation. https://doi.org/10.2172/1333485 Publication ID: 47786
  • Hopkins, M.M., Scheiner, B., Barnat, E., Baalrud, S.D., Yee, B.T., & Yee, B.T. (2016). Formation of Anode Spots in Low Pressure Plasmas [Conference Poster]. https://www.osti.gov/biblio/1527071 Publication ID: 46991
  • Moore, C.H., Fierro, A.S., Clem, P., Hjalmarson, H.P., Jorgenson, R.E., Hopkins, M.M., Biedermann, L.B., & Biedermann, L.B. (2016). Seed Electron Generation Mechanisms in the Presence of a Dielectric Particle [Conference Poster]. https://www.osti.gov/biblio/1399333 Publication ID: 47013
  • Tang, R., Barnat, E., Fierro, A.S., Hopkins, M.M., & Hopkins, M.M. (2016). System for Characterization of the Discharge Process in a High-Pressure Pulsed Arc Discharge [Conference Poster]. https://www.osti.gov/biblio/1399335 Publication ID: 47019
  • Barnat, E., Hopkins, M.M., Yee, B.T., Scheiner, B., Baalrud, S.D., & Baalrud, S.D. (2016). Anode Spot Formation in Low Pressure and Temperature He Plasma [Conference Poster]. https://www.osti.gov/biblio/1526837 Publication ID: 47489
  • Yee, B.T., Barnat, E., Scheiner, B.S., Baalrud, S., Hopkins, M.M., & Hopkins, M.M. (2016). Experimental Study of a Pulsating Anode Spot in Helium [Conference Poster]. https://www.osti.gov/biblio/1399189 Publication ID: 52675
  • Fierro, A.S., Moore, C.H., Moore, S.G., Biedermann, L.B., Hopkins, M.M., & Hopkins, M.M. (2016). PIC-DSMC simulation of a triggered vacuum switch with a copper/beryllium cathode [Conference Poster]. https://www.osti.gov/biblio/1399205 Publication ID: 52703
  • Barnat, E., Hopkins, M.M., Yee, B.T., & Yee, B.T. (2016). Particle-in-cell study of the ion-to-electron sheath transition. Physics of Plasmas, 23(8). https://doi.org/10.1063/1.4960382 Publication ID: 49632
  • Fierro, A.S., Moore, C.H., Yee, B.T., Hopkins, M.M., & Hopkins, M.M. (2016). Incorporating Radiation Transport into Particle-Based Plasma Simulations [Conference Poster]. https://doi.org/10.1109/PLASMA.2016.7534211 Publication ID: 50637
  • Tang, R., Barnat, E., Hopkins, M.M., Miller, P.A., & Miller, P.A. (2016). Temporal and Spatial Dynamics of a Bipolar Pulsed Plasma at Audio Frequency [Conference Poster]. https://doi.org/10.1109/PLASMA.2016.7534082 Publication ID: 50641
  • Hopkins, M.M., Yee, B.T., Barnat, E., Baalrud, S.D., Scheiner, B.S., & Scheiner, B.S. (2016). Plasma Potential Locking [Conference Poster]. https://doi.org/10.1109/PLASMA.2016.7534343 Publication ID: 50650
  • Scheiner, B.S., Baalrud, S.D., Yee, B.T., Hopkins, M.M., Barnat, E., & Barnat, E. (2016). Theory of Sheaths Near Positively Biased Electrodes [Conference Poster]. https://doi.org/10.1109/PLASMA.2016.7534341 Publication ID: 50651
  • Moore, C.H., Fierro, A.S., Hjalmarson, H.P., Jorgenson, R.E., Hopkins, M.M., Biedermann, L.B., Clem, P., & Clem, P. (2016). Development of Kinetic PIC-DSMC Model for Breakdown in the Presence of a Dielectric [Conference Poster]. https://www.osti.gov/biblio/1366833 Publication ID: 50671
  • Biedermann, L.B., Chow, W.W., Moore, C.H., Moore, S.G., Fierro, A.S., Hopkins, M.M., Elizondo-Decanini, J.M., & Elizondo-Decanini, J.M. (2016). Development of PIC-DSMC Model for Laser-Triggered Vacuum Switch [Conference Poster]. https://www.osti.gov/biblio/1366830 Publication ID: 50680
  • Yee, B.T., Scheiner, B.S., Baalrud, S., Barnat, E., Hopkins, M.M., & Hopkins, M.M. (2016). Length Scales of the Electron Sheath and Presheath [Conference Poster]. https://doi.org/10.1109/PLASMA.2016.7534157 Publication ID: 50693
  • Fierro, A.S., Moore, C.H., Hopkins, M.M., & Hopkins, M.M. (2016). PIC/DSMC Simulation of Radiation Transport Dynamics in Helium Gas Discharges [Conference Poster]. https://www.osti.gov/biblio/1368472 Publication ID: 50869
  • Hopkins, M.M., Yee, B.T., Baalrud, S.D., Barnat, E., & Barnat, E. (2016). The onset of plasma potential locking. Physics of Plasmas, 23(6). https://doi.org/10.1063/1.4953896 Publication ID: 52446
  • Hopkins, M.M., Fierro, A.S., Moore, C.H., & Moore, C.H. (2016). Experiences with Kinetic Modeling of Atmospheric Pressure Discharge [Conference Poster]. https://www.osti.gov/biblio/1368776 Publication ID: 50157
  • Scheiner, B., Baalrud, S.D., Yee, B.T., Hopkins, M.M., Barnat, E., & Barnat, E. (2015). Theory of the electron sheath and presheath. Physics of Plasmas, 22(12). https://doi.org/10.1063/1.4939024 Publication ID: 45884
  • Scheiner, B., Baalrud, S.D., Yee, B.T., Hopkins, M.M., Barnat, E., & Barnat, E. (2015). Theory of the electron sheath and presheath [Conference Poster]. Physics of Plasmas. https://doi.org/10.1063/1.4939024 Publication ID: 45896
  • Hopkins, M.M., Manginell, R., Boerner, J., Moore, C.H., Moorman, M.W., & Moorman, M.W. (2015). Fully Kinetic Simulation of Atmospheric Pressure Microcavity Discharge Device [Conference Poster]. https://doi.org/10.1109/PLASMA.2015.7179947 Publication ID: 45953
  • Yee, B.T., Scheiner, B., Baalrud, S., Barnat, E., Hopkins, M.M., & Hopkins, M.M. (2015). Bulk plasma effects of the electron sheath [Conference Poster]. https://www.osti.gov/biblio/1336337 Publication ID: 46007
  • Moore, C.H., Moore, S.G., Hopkins, M.M., Boerner, J., Cartwright, K.L., Biedermann, L.B., & Biedermann, L.B. (2015). Timestep Constraints for Accurate PIC-DSMC Simulation of Breakdown: From Arc Initiation to Stable Arcs [Conference Poster]. https://www.osti.gov/biblio/1333479 Publication ID: 46075
  • Tang, R., Barnat, E., Hopkins, M.M., Miller, P.A., & Miller, P.A. (2015). Study of Bipolar Pulsed Plasma Dynamics for Surface Processing Applications [Conference Poster]. https://www.osti.gov/biblio/1877822 Publication ID: 46237
  • Rao, R.R., Mondy, L.A., Ingraham, M.D., Subia, S.R., Hopkins, M.M., Bolintineanu, D.S., Lechman, J.B., Altobelli, S., & Altobelli, S. (2015). Continuum Models of Suspension Flow:From Manufacturing to Proppants [Presentation]. https://www.osti.gov/biblio/1324589 Publication ID: 45434
  • Hopkins, M.M. (2015). Introduction to Collisional PIC Methods for Simulating Vacuum Arcs [Conference Poster]. https://www.osti.gov/biblio/1326768 Publication ID: 45273
  • Moore, C.H., Hopkins, M.M., Moore, S.G., Boerner, J., Cartwright, K.L., & Cartwright, K.L. (2015). Breakdown simulations from arc initiation to stable arcs: Challenges for accurate PIC-DSMC simulation [Conference Poster]. https://www.osti.gov/biblio/1339229 Publication ID: 44667
  • Hopkins, M.M., Manginell, R., Boerner, J., Moore, C.H., Moorman, M.W., & Moorman, M.W. (2015). Fully Kinetic Simulation of Atmospheric Pressure Microcavity Discharge Device [Conference Poster]. https://www.osti.gov/biblio/1254703 Publication ID: 43607
  • Moore, C.H., Hopkins, M.M., Moore, S.G., Boerner, J., Cartwright, K.L., & Cartwright, K.L. (2015). Breakdown simulations from arc initiation to stable arcs: Challenges for accurate PIC-DSMC simulation [Conference Poster]. https://www.osti.gov/biblio/1241115 Publication ID: 42354
  • Hopkins, M.M., Crozier, P., Moore, C.H., & Moore, C.H. (2014). Comparison of Aleph and BOLSIG+ Results for Electron-Nitrogen Chemistry. https://doi.org/10.2172/1561682 Publication ID: 39479
  • Barnat, E., Hopkins, M.M., Yee, B.T., Laity, G., & Laity, G. (2014). Response of the plasma to the size of an electron collecting electrode biased near the plasma potential [Conference Poster]. https://www.osti.gov/biblio/1367605 Publication ID: 39488
  • Hopkins, M.M., Yee, B.T., Barnat, E., Baalrud, S., & Baalrud, S. (2014). The Influence of Anode Size on Bulk Plasma State: Simulation Theory and Experiment [Conference Poster]. https://www.osti.gov/biblio/1242107 Publication ID: 39310
  • Rao, R.R., Schunk, P.R., Hopkins, M.M., Roberts, S.A., & Roberts, S.A. (2014). Goma 6.0 [Conference Poster]. https://www.osti.gov/biblio/1242112 Publication ID: 39316
  • Hopkins, M.M., Boerner, J., Moore, S.G., Crozier, P., Musson, L.C., & Musson, L.C. (2014). Simulation of microscale breakdown after vacuum seal failure [Conference]. https://www.osti.gov/biblio/1146169 Publication ID: 40891
  • Schunk, P.R., Labreche, D.A., Hopkins, M.M., Sun, A., Wilkes, E.D., & Wilkes, E.D. (2013). Advanced Capabilities in GOMA 6.0 – Augmenting Conditions Automatic Continuation and Linear Stability Analysis. https://doi.org/10.2172/1490545 Publication ID: 41439
  • Moore, S.G., Crozier, P., Moore, C.H., Bettencourt, M.T., Hopkins, M.M., & Hopkins, M.M. (2013). Automatic Coarsening of the Particle Interaction Mesh in a Hybrid PIC-DSMC Simulation [Conference]. https://www.osti.gov/biblio/1115116 Publication ID: 36296
  • Moore, C.H., Hopkins, M.M., Boerner, J., Crozier, P., Moore, S.G., & Moore, S.G. (2013). Paschen Concepts in Non-Uniform Gas [Conference]. https://www.osti.gov/biblio/1116426 Publication ID: 36425
  • Hopkins, M.M., Boerner, J., Moore, C.H., Crozier, P., Moore, S.G., Bettencourt, M.T., Hooper, R., & Hooper, R. (2013). Computational Efficiency for Kinetic Simulation of Vacuum Arcs [Conference]. https://www.osti.gov/biblio/1116438 Publication ID: 36431
  • Hopkins, M.M., Boerner, J., Moore, C.H., Crozier, P., & Crozier, P. (2013). Addressing Challenges to Simulating Breakdown and Arc Evolution in Vacuum and Low Pressure Systems [Conference]. https://www.osti.gov/biblio/1110253 Publication ID: 35594
  • Moore, S.G., Crozier, P., Moore, C.H., Bettencourt, M.T., Hopkins, M.M., & Hopkins, M.M. (2013). Automatic Coarsening of the Particle Interaction Mesh in a Hybrid PIC-DSMC Simulation [Conference]. https://www.osti.gov/biblio/1111367 Publication ID: 35817
  • Hopkins, M.M., Hooper, R., Boerner, J., Moore, C.H., Barnat, E., Crozier, P., Moore, S.G., Bettencourt, M.T., Musson, L.C., & Musson, L.C. (2013). Challenges to Simulating Vacuum Arc Discharge [Conference]. https://www.osti.gov/biblio/1115246 Publication ID: 34361
  • Sackinger, P.A., Noble, D.R., Notz, P.K., Roberts, S.A., Rao, R.R., Chen, K.S., Sun, A., Hopkins, M.M., Subia, S.R., Hopkins, P.L., Moffat, H.K., Roach, R.A., & Roach, R.A. (2013). GOMA 6.0 – A Full-Newton Finite Element Program for Free and Moving Boundary Problems with Coupled Fluid/ Solid Momentum, Energy, Mass, and Chemical Species Transport: User’s Guide. https://doi.org/10.2172/1089869 Publication ID: 96580
  • Hopkins, M.M., Boerner, J., Moore, C.H., Crozier, P., Campbell, R.B., Musson, L.C., Bettencourt, M.T., & Bettencourt, M.T. (2013). Accommodating Large Temporal Spatial and Particle Weighting Demands for Simulating Vacuum Arc Discharge [Conference]. https://www.osti.gov/biblio/1106697 Publication ID: 34055
  • Hopkins, M.M., Boerner, J., Crozier, P., Musson, L.C., Campbell, R.B., & Campbell, R.B. (2013). 1D PIC-DSMC Simulation of Microscale Breakdown in Gaps with a Non-Uniform Background Gas Density [Conference]. https://www.osti.gov/biblio/1083681 Publication ID: 34119
  • Hopkins, M.M. (2013). Solution Comparisons of Models of an Expanding Ambipolar Plasma [Conference]. https://www.osti.gov/biblio/1110658 Publication ID: 34160
  • Hopkins, M.M. (2013). Predicting Neutron Tube Performance [Conference]. https://www.osti.gov/biblio/1078877 Publication ID: 33211
  • Hopkins, M.M., Boerner, J., Crozier, P., Musson, L.C., & Musson, L.C. (2013). PIC Simulation of Microscale Breakdown in Gaps Filled with a Non-Uniform Background Neutral Gas Density [Conference]. https://www.osti.gov/biblio/1145244 Publication ID: 32412
  • Crozier, P., Boerner, J., Hopkins, M.M., Moore, C.H., Musson, L.C., & Musson, L.C. (2012). Breakdown voltage calculations using PIC-DSMC [Conference]. https://www.osti.gov/biblio/1061094 Publication ID: 30360
  • Hopkins, M.M., Barnat, E., Crozier, P., Bettencourt, M.T., Moore, C.H., Hooper, R., Musson, L.C., & Musson, L.C. (2012). The Path to Full Geometry 3D Vacuum Arc Simulation [Conference]. https://www.osti.gov/biblio/1116300 Publication ID: 30481
  • Hopkins, M.M., Crozier, P., Barnat, E., Boerner, J., Hooper, R., Bettencourt, M.T., Musson, L.C., & Musson, L.C. (2012). 1D PIC-DSMC Microscale Breakdown Simulations [Conference]. https://www.osti.gov/biblio/1072466 Publication ID: 30658
  • Hopkins, M.M., Crozier, P., Boerner, J., Musson, L.C., & Musson, L.C. (2012). 1D PIC-DSMC Simulations of Breakdown in Microscale Gaps [Conference]. https://www.osti.gov/biblio/1072685 Publication ID: 30343
  • Hopkins, M.M., Crozier, P., Hooper, R., Boerner, J., Musson, L.C., Bettencourt, M.T., & Bettencourt, M.T. (2012). 1D PIC-DSMC Simulations of Breakdown in Microscale Gaps [Conference]. https://www.osti.gov/biblio/1116613 Publication ID: 29585
  • Hopkins, M.M., Boerner, J., Barnat, E., Crozier, P., Bettencourt, M.T., Musson, L.C., Hooper, R., Moore, C.H., & Moore, C.H. (2012). 3D vacuum arc breakdown simulation : [Conference]. https://www.osti.gov/biblio/1104785 Publication ID: 28888
  • Cartwright, K.L., Radtke, G.A., Hopkins, P.L., Hopkins, M.M., & Hopkins, M.M. (2012). Error Estimation for Solution Verification of Stochastic Problems in PIC Plasma Models [Conference]. https://www.osti.gov/biblio/1116797 Publication ID: 28900
  • Hopkins, M.M., Crozier, P., Hooper, R., Boerner, J., Musson, L.C., Bettencourt, M.T., & Bettencourt, M.T. (2012). PIC-DSMC Simulations of Breakdown in Microscale Gaps [Conference]. https://www.osti.gov/biblio/1073337 Publication ID: 28964
  • Hopkins, M.M., Crozier, P., Hooper, R., Boerner, J., Musson, L.C., Bettencourt, M.T., & Bettencourt, M.T. (2012). 1D PIC-DSMC Simulations of Breakdown in Microscale Gaps [Conference]. https://www.osti.gov/biblio/1140709 Publication ID: 29089
  • Vanderlei, B.A., Hopkins, M.M., Fauci, L.J., & Fauci, L.J. (2012). Error estimation for immersed interface solutions. Discrete and Continuous Dynamical Systems – Series B, 17(4), pp. 1185-1203. https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84861690032&origin=inward Publication ID: 20447
  • Hopkins, M.M., Hooper, R., Crozier, P., Bettencourt, M.T., Boerner, J., Musson, L.C., & Musson, L.C. (2012). 1D Breakdown Simulations and Development of an Energy Conserving Implicit PIC-DSMC Method [Presentation]. https://www.osti.gov/biblio/1658752 Publication ID: 28818
  • Hopkins, M.M., Boerner, J., Barnat, E., Crozier, P., Bettencourt, M.T., Moore, C.H., Hooper, R., Musson, L.C., & Musson, L.C. (2012). Building Blocks for 3D Vacuum Arc Discharge [Conference]. https://www.osti.gov/biblio/1067530 Publication ID: 27934
  • Hopkins, M.M., Crozier, P., Barnat, E., Boerner, J., & Boerner, J. (2012). State of 3D vacuum arc discharge simulation via PIC-DSMC [Conference]. https://www.osti.gov/biblio/1294533 Publication ID: 27575
  • Timko, H., Crozier, P., Hopkins, M.M., Matyash, K., Schneider, R., & Schneider, R. (2012). Why Perform Code-to-Code Comparisons: A Vacuum Arc Discharge Simulation Case Study [Conference]. Contributions to Plasma Physics. https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84860591745&origin=inward Publication ID: 23176
  • Rao, R.R., Mondy, L.A., Schunk, P.R., Hopkins, M.M., & Hopkins, M.M. (2011). Finite element analysis of multilayer coextrusion. https://doi.org/10.2172/1029813 Publication ID: 24165
  • Hopkins, M.M., Crozier, P., Musson, L.C., Hughes, T., Hooper, R., Barnat, E., & Barnat, E. (2011). Ingredients for 3D Vacuum Arc Discharge Simulation [Conference]. https://www.osti.gov/biblio/1106327 Publication ID: 24169
  • Hopkins, M.M., Hughes, T., & Hughes, T. (2011). Numerical Experiments on the Stability of an Unstructured Particle-In-Cell Method [Conference]. https://www.osti.gov/biblio/1140474 Publication ID: 23580
  • Rao, R.R., Noble, D.R., Mondy, L.A., Hopkins, M.M., & Hopkins, M.M. (2011). NUMERICAL SIMULATION OF FILLING PROCESSES WITH NEWTONIAN AND SHEARTHINNING FLUIDS [Conference]. https://www.osti.gov/biblio/1108264 Publication ID: 22593
  • Hopkins, M.M., Boerner, J., Crozier, P., Hughes, T., & Hughes, T. (2011). Dynamic Particle Weighting and Velocity Distributions [Conference]. https://www.osti.gov/biblio/1109243 Publication ID: 21691
  • Hopkins, M.M., Crozier, P., Hughes, T., & Hughes, T. (2010). Progress Toward Robust Dynamic Particle Reweighting [Presentation]. https://www.osti.gov/biblio/1675225 Publication ID: 19972
  • Crozier, P., Hopkins, M.M., Boerner, J., Hughes, T., & Hughes, T. (2010). Arc simulations using Aleph a DSMC/PIC code [Conference]. https://www.osti.gov/biblio/1124425 Publication ID: 17216
  • Hughes, T., Hopkins, M.M., Boerner, J., Crozier, P., Hooper, R., Hopkins, P.L., Musson, L.C., Williams, A.B., & Williams, A.B. (2009). Instability-driven ionization in a low-pressure helium discharge [Conference]. https://www.osti.gov/biblio/1141411 Publication ID: 16906
  • Hopkins, M.M., Barnat, E., Miller, P.A., & Miller, P.A. (2009). Copy of Plasma Diagnostic Capabilities Used Towards Code Development and Validation [Presentation]. https://www.osti.gov/biblio/1695644 Publication ID: 16539
  • Hopkins, M.M., Boerner, J., Hughes, T., & Hughes, T. (2009). Arc simulations using Aleph a DSMC/PIC code [Presentation]. https://www.osti.gov/biblio/1695648 Publication ID: 16548
  • Rao, R.R., Yang, P., Mondy, L.A., Noble, D.R., Subia, S.R., Sun, A., Hopkins, M.M., Schunk, P.R., Moffat, H.K., Adolf, D.B., & Adolf, D.B. (2009). Finite element modeling of complex rheology [Presentation]. https://www.osti.gov/biblio/1695684 Publication ID: 16088
  • Hopkins, M.M., Piekos, E.S., Dechant, L., Pointon, T., & Pointon, T. (2009). Hybrid plasma modeling. https://doi.org/10.2172/983666 Publication ID: 15756
  • Hopkins, M.M., Hopkins, P.L., Hooper, R., Musson, L.C., Plimpton, S.J., Williams, A.B., & Williams, A.B. (2008). Aleph : [Conference]. https://www.osti.gov/biblio/1268300 Publication ID: 15279
  • Rao, R.R., Collins, R., Lenhart, J.L., Schunk, P.R., Hopkins, M.M., Notz, P.K., Mondy, L.A., Mrozek, R., & Mrozek, R. (2008). Finite element analysis of multilayer coextrusion [Conference]. https://www.osti.gov/biblio/1143243 Publication ID: 14005
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