Publications

Johnston, M.D., Sinclair, M., & Grabowski, T.C. (2024). Pulsed Power Accelerators and Their Architectures - The Basics [Presentation]. 10.2172/2585234

Johnston, M.D., & Grabowski, T.C. (2024). E-Field Measurements of HERMES III Electromagnetic Pulse (EMP) Environment [Presentation]. 10.2172/2585422

Powell, T.C., Darr, A., Renk, T.J., Webb, T.J., Marshall, G.J., Johnston, M.D., Mazarakis, M.G., Grabowski, T.C., & Nicholas, R.J. (2024). Compact Bremsstrahlung Diode Development on HERMES-III. 10.2172/2430024

Schwarz, J., Cuneo, M.E., Hutsel, B.T., Lamppa, D.C., Hines, N.R., Reyes, P.A., Banasek, J.T., Johnston, M.D., McBride, R., & Jordan, N. (2024). Understanding electrode plasma formation on wires and thin foils via vacuum ultraviolet spectroscopy of desorbed surface contaminants [Conference Poster]. 10.2172/2540452

Bennett, N.L., Lamppa, D.C., Porwitzky, A., Jennings, C.A., Evstatiev, E.G., Chandler, K.M., Banasek, J.T., Patel, S.G., Yager-Elorriaga, D.A., Savage, M.E., Johnston, M.D., Hess, M.H., Cuneo, M.E., Welch, D., Rose, D., Watson, E., & Myers, C. (2023). MRT 7365: Power flow physics and key physics phenomena. 10.2172/2430180

Schwarz, J., Johnston, M.D., Cuneo, M.E., Hutsel, B.T., Steiner, A.M., Reyes, P.A., Banasek, J.T., Lamppa, D.C., McBride, R., & Jordan, N. (2023). Understanding electrode plasma formation on wires and thin foils via vacuum ultraviolet spectroscopy of desorbed surface contaminants [Conference Presentation]. 10.2172/2430814

Johnston, M.D., Banasek, J.T., Reyes, P.A., Lamppa, D.C., Hutsel, B.T., Steiner, A.M., Jordan, N., Cuneo, M.E., Schwarz, J., & McBride, R. (2023). Understanding electrode plasma formation on wires and thin foils via vacuum ultraviolet spectroscopy of desorbed surface contaminants [Conference Presentation]. 10.2172/2431156

Webb, T.J., Bliss, D.E., Chandler, G.A., Foulk, J.W., Dunham, G.S., Edens, A., Harding, E.C., Johnston, M.D., Jones, M., Mangan, M.A., McCoy, C.A., Maurer, A.J., Steiner, A.M., Wu, M., Yager-Elorriaga, D.A., & Yates, K.C. (2023). Radiation, optical, power flow, and electrical diagnostics at the Z facility: Layout and techniques utilized to operate in the harsh environment. Review of Scientific Instruments, 94(3). 10.1063/5.0123448

Smith, T.J., Johnston, M.D., Jordan, N., Cuneo, M.E., Schwarz, J., & McBride, R. (2023). Understanding Electrode Plasma Formation on Wires and Thin Foils via Vacuum Ultraviolet Spectroscopy of Desorbed Surface Contaminants [Conference Poster]. IEEE International Conference on Plasma Science. 10.2172/2432010

Banasek, J.T., Johnston, M.D., Reyes, P.A., Schwarz, J., Hines, N.R., & Smith, T.J. (2023). Spectrographic and Interferometric Techniques to Measure Power Flow Plasmas on Z [Conference Presentation]. IEEE International Conference on Plasma Science. 10.2172/2431166

Johnston, M.D., Grabowski, T.C., Rose, D., & Welch, D. (2022). Characterization and Optimization of Bremsstrahlung X-ray Diodes [Conference Presentation]. 10.2172/2005745

Smith, T.J., Schwarz, J., Johnston, M.D., Jordan, N., Cuneo, M.E., & McBride, R. (2022). Understanding electrode plasma formation on wires and thin foils via vacuum ultraviolet spectroscopy of desorbed surface contaminants [Conference Presentation]. 10.2172/2005667

Johnston, M.D., Jordan, N., Cuneo, M.E., McBride, R., Smith, T.J., & Schwarz, J. (2022). Understanding electrode plasma formation on wires and thin foils via vacuum ultraviolet spectroscopy of desorbed surface contaminants [Conference Presentation]. 10.2172/2003955

Johnston, M.D., Jordan, N., Cuneo, M.E., Laity, G.R., McBride, R., & Smith, T. (2022). Understanding electrode plasma formation on wires and thin foils via vacuum ultraviolet spectroscopy of desorbed surface contaminants [Conference Presentation]. https://doi.org/10.2172/2001727

Renk, T.J., Oliver, B.V., Kiefer, M.L., Webb, T.J., Leckbee, J.J., Johnston, M.D., Simpson, S., & Mazarakis, M.G. (2022). Characterization of self-magnetic pinch (SMP) radiographic diode performance on RITS-6 at Sandia National Laboratories. I. Diode dynamics, DC heating to extend radiation pulse. Physics of Plasmas, 29(2). 10.1063/5.0073971

Renk, T.J., Oliver, B.V., Kiefer, M.L., Webb, T.J., Leckbee, J.J., Johnston, M.D., Simpson, S., & Mazarakis, M.G. (2022). Characterization of self-magnetic pinch radiographic diode performance on RITS-6 at Sandia National Laboratories. II. Coupling between the inductive voltage adder and the SMP load. Physics of Plasmas, 29(2). 10.1063/5.0073973

Johnston, M.D., Jordan, N., Cuneo, M.E., Laity, G.R., McBride, R., & Smith, T.J. (2022). Understanding electrode plasma formation on wires and thin foils via vacuum ultraviolet spectroscopy of desorbed surface contaminants [Conference Presentation]. 10.2172/2001728

Johnston, M.D., Jordan, N., Cuneo, M.E., Laity, G.R., McBride, R., & Smith, T. (2021). Understanding electrode plasma formation on wires and thin foils via vacuum ultraviolet spectroscopy of desorbed surface contaminants [Conference Presentation]. 10.2172/1906435

Johnston, M.D., Jordan, N., Cuneo, M.E., Laity, G.R., McBride, R., & Smith, T.J. (2021). Understanding electrode plasma formation on wires and thin foils via vacuum ultraviolet spectroscopy of desorbed surface contaminants [Conference Presentation]. 10.2172/1899461

Renk, T.J., Oliver, B.V., Kiefer, M.L., Webb, T.J., Leckbee, J.J., Johnston, M.D., Simpson, S., & Mazarakis, M.G. (2021). Characterization of Self-Magnetic Pinch (SMP) radiographic diode performance on RITS-6 at Sandia National Laboratories: 1) Diode Dynamics, DC Heating to extend Radiation Pulse. 10.2172/1829007

Smith, T.J., Johnston, M.D., Jordan, N., Cuneo, M.E., Laity, G.R., & McBride, R. (2021). Understanding electrode plasma formation on wires and thin foils via vacuum ultraviolet spectroscopy of desorbed surface contaminants [Conference Presentation]. 10.2172/1886769

Johnston, M.D., Jordan, N., Cuneo, M.E., Laity, G.R., McBride, R., & Smith, T.J. (2021). Understanding electrode plasma formation on wires and thin foils via vacuum ultraviolet spectroscopy of desorbed surface contaminants [Conference Presentation]. 10.2172/1881679

Renk, T.J., Kiefer, M.L., Oliver, B.V., Webb, T.J., Leckbie, J., Johnston, M.D., Simpson, S., & Mazarakis, M.G. (2020). Characterization of Self-Magnetic Pinch (SMP) Radiographic Diode Performance on RITS-6 at Sandia National Laboratories. 10.2172/1678823

Laity, G.R., Johnston, M.D., Patel, S.G., & Cuneo, M.E. (2020). Power Flow Spectroscopy Diagnostics & Platform Development at the Z Pulsed Power Facility. 10.2172/1677519

Patel, S.G., Johnston, M.D., Laity, G.R., Bliss, D.E., MacRunnels, K.A., Scoglietti, D.J., & Cuneo, M.E. (2019). Diagnosing Electrode Surfaces on the Z-Machine Using Optical Spectroscopy [Conference Poster]. https://www.osti.gov/biblio/1642939

Patel, S.G., Kiefer, M.L., Cuneo, M.E., Maron, Y., Stambulchik, E., Doron, R., & Johnston, M.D. (2019). Visible Spectroscopy Techniques for Diagnosing Plasmas in High-Energy-Density Power-Flow Systems [Conference Poster]. https://www.osti.gov/biblio/1641006

Biswas, S., Doron, R., Mikitchuk, D., Maron, Y., Johnston, M.D., Patel, S.G., Kiefer, M.L., & Cuneo, M.E. (2018). Shielding of the azimuthal magnetic field by the anode plasma in a relativistic self-magnetic-pinch diode. Physics of Plasmas, 25(11). 10.1063/1.5046945

Johnston, M.D. (2018). Spectroscopic Measurements of Plasmas in the Power Flow Regions on the Z Machine [Conference Poster]. https://www.osti.gov/biblio/1574599

Laity, G.R., Aragon, C., Bennett, N.L., Bliss, D.E., Foulk, J.W., Fierro, A.S., Gomez, M.R., Hess, M.H., Hutsel, B.T., Jennings, C.A., Johnston, M.D., Kossow, M.R., Lamppa, D.C., Martin, M.R., Patel, S.G., Porwitzky, A., Robinson, A.C., Rose, D., Vandevender, P., … Cuneo, M.E. (2018). Recent Diagnostic Platform Accomplishments for Studying Vacuum Power Flow Physics at the Sandia Z Accelerator [Conference Poster]. https://www.osti.gov/biblio/1592228

Patel, S.G., Johnston, M.D., Webb, T.J., Mazarakis, M.G., Bennett, N., Muron, D.J., Kiefer, M.L., Maron, Y., & Gilgenbach, R. (2018). Magnetic Field Measurements on the Self Magnetic Pinch Diode At SNL using Zeeman Splitting [Presentation]. 10.1109/PLASMA.2015.7179869

Patel, S.G., Johnston, M.D., Bliss, D.E., Laity, G.R., Gomez, M.R., Falcon, R.E., Scoglietti, D.J., MacRunnels, K.A., Savage, M.E., & Cuneo, M.E. (2018). Measurements of Z Electrode Temperatures Using Absolutely Calibrated Streaked Visible Spectroscopy Systems and Avalanche Photodiodes [Conference Poster]. IEEE International Conference on Plasma Science. https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85118950161&origin=inward

Mazarakis, M.G., Cuneo, M.E., Fournier, S.D., Johnston, M.D., Kiefer, M.L., Leckbee, J., Nielsen, D.S., Oliver, B.V., Sceiford, M.E., Simpson, S., Renk, T.J., Reyes, C., Webb, T.J., Ziska, D., Bennett, N., Droemer, D.W., Gignac, R.E., & Wilkins, F.L. (2018). Contribution of the backstreaming ions to the self-magnetic pinch (SMP) diode current. Physics of Plasmas, 25(4). 10.1063/1.5009014

Bliss, D.E., Patel, S.G., Falcon, R.E., Johnston, M.D., Lemke, R.W., Porwitzky, A., & Cuneo, M.E. (2017). Streaked Visible Spectroscopy of Power Flow Surface Plasmas: Anodes Cathodes Convolutes and Loads [Conference Poster]. https://www.osti.gov/biblio/1513183

Johnston, M.D., Patel, S.G., Falcon, R.E., Cartwright, K., Kiefer, M.L., Cuneo, M.E., & Maron, Y. (2017). Measuring Plasma Formation Field Strength and Current Loss in Pulsed Power Diodes. 10.2172/1409920

Johnston, M.D., Patel, S.G., Falcon, R.E., Cartwright, K., Kiefer, M.L., Cuneo, M.E., Biswas, S., Doron, R., Mikitchuk, D., Stambulchik, E., & Maron, Y. (2017). Visible Spectroscopy Measurements of Plasmas and Fields in the Power Flow Regions on the Z Machine [Conference Poster]. https://www.osti.gov/biblio/1510708

Johnston, M.D., Patel, S.G., Falcon, R.E., Bliss, D.E., Laity, G.R., Kiefer, M.L., Cuneo, M.E., Biswas, S., Doron, R., Mikitchuk, D., Stambulchik, E., & Yitzhak, M. (2017). Visible Spectroscopy Measurements of Plasmas and Fields on the Z-Machine at Sandia National Laboratories [Conference Poster]. https://www.osti.gov/biblio/1468511

Laity, G.R., Aragon, C., Foulk, J.W., Falcon, R.E., Gomez, M.R., Hess, M.H., Hutsel, B.T., Jennings, C.A., Johnston, M.D., Lamppa, D.C., Patel, S.G., Porwitzky, A., Vandevender, J.P., Webb, T.J., Rochau, G.A., Stygar, W.A., & Cuneo, M.E. (2017). Experimental Platform Development for Studying Vacuum Power Flow Physics at the Sandia Z Accelerator [Conference Poster]. https://www.osti.gov/biblio/1456844

Patel, S.G., Johnston, M.D., Webb, T.J., Falcon, R.E., Bliss, D.E., Laity, G.R., Gomez, M.R., Bennett, N., Welch, D., Kiefer, M.L., Cuneo, M.E., Maron, Y., & Gilgenbach, R. (2017). Visible Spectroscopy and Machgnic Field Profile Measurements of Pulsed Power Diodes [Conference Poster]. https://www.osti.gov/biblio/1458134

Mazarakis, M.G., Nichelle, B., Cuneo, M.E., Johnston, M.D., Kiefer, M.L., Leckbee, J., Nielsen, D.S., Obregon, R., Oliver, B.V., Renk, T.J., Ruiz, C.L., Fournier, S.D., Simpson, S., Webb, T.J., Welch, D., Frank, W.L., & Ziska, D. (2016). Measurements of the back-streaming ions in the SMP diode [Conference Poster]. https://www.osti.gov/biblio/1404798

Johnston, M.D., Patel, S.G., Kiefer, M.L., Biswas, S., Doron, R., Stambulchik, E., Bernshtam, V., & Maron, Y. (2016). Electric and Magnetic Field Measurements in High Energy Electron Beam Diode Plasmas Using Optical Spectroscopy [Conference Poster]. https://www.osti.gov/biblio/1420162

Renk, T.J., Simpson, S., Webb, T.J., Johnston, M.D., Leckbee, J., Mazarakis, M.G., Patel, S.G., & Kiefer, M.L. (2016). Use of In-Situ Anode Heating and Plasma Glow Discharge Cleaning and its Effects on Impedance Behavior in the Self-Magnetic Pinch (SMP) Diode on the RITS-6 Accelerator [Conference Poster]. https://www.osti.gov/biblio/1393765

Patel, S.G., Johnston, M.D., Webb, T.J., Bennett, N., Maron, Y., Muron, D.J., Kiefer, M.L., Gilgenbach, R.M., Lau, Y.Y., & Willingale, L. (2016). Optical Spectroscopy and Magnetic Field Profile Measurements on the Self Magnetic Pinch Diode [Presentation]. https://www.osti.gov/biblio/1529837

Patel, S.G., Johnston, M.D., Webb, T.J., Muron, D.J., Mazarakis, M.G., Bennett, N., Kiefer, M.L., Maron, Y., & Gilgenbach, R. (2016). Magnetic Field Measurements on the Self Magnetic Pinch Diode At SNL using Zeeman Splitting [Conference Poster]. https://www.osti.gov/biblio/1366791

Johnston, M.D., Patel, S.G., Kiefer, M.L., Biswas, S., Doron, R., Bernshtam, V., Stambulchik, E., & Maron, Y. (2016). Measurements of Magnetic and Electric Fields in High Energy Electron Beam Diodes [Conference Poster]. 10.1109/PLASMA.2016.7534094

Simpson, S., Johnston, M.D., Mazarakis, M.G., Nielsen, D.S., Renk, T.J., Tang, R., Webb, T.J., Ziska, D., Kiefer, M.L., Patel, S.G., Weber, B., & Zier, J. (2016). In-situ anode heating and plasma glow discharge cleaning and its effects on atomic constituents in the A-K gap in Self-Magnetic Pinch (SMP) experiments [Conference Poster]. 10.1109/PLASMA.2016.7534263

Mazarakis, M.G., Cuneo, M.E., Fournier, S.D., Johnston, M.D., Kiefer, M.L., Leckbee, J., Nielsen, D.S., Renk, T.J., Ruiz, C.L., Simpson, S., Webb, T.J., Ziska, D., Nichelle, B., Robert, O.J., Dale, W.R., & Frank, W.L. (2016). Dependence of the Back-streaming Ion Current on the Self-magnetic pinch (SMP) Electron Diode Parameters [Conference Poster]. https://www.osti.gov/biblio/1368854

Mazarakis, M.G., Cuneo, M.E., Johnston, M.D., Kiefer, M.L., Leckbee, J., Nielsen, D.S., Renk, T.J., Ruiz, C.L., Simpson, S., Webb, T.J., Ziska, D., Welch, D., & Wilkins, R.W. (2015). Dependence of the Back-streaming Ion Current on the Self-magnetic pinch (SMP) Electron Diode Parameters [Conference Poster]. https://www.osti.gov/biblio/1332806

Patel, S.G., Johnston, M.D., Webb, T.J., Maron, Y., Bennett, N.L., Muron, D.J., Welch, D., Kiefer, M.L., & Gilgenbach, R.M. (2015). Prospectus Exam: Magnetic Field Measurements on the Self Magnetic Pinch Diode At RITS-6 Using Zeeman Splitting [Presentation]. https://www.osti.gov/biblio/1334575

Patel, S.G., Johnston, M.D., Webb, T.J., Maron, Y., Mazarakis, M.G., Bennett, N., Muron, D.J., Kiefer, M.L., & Gilgenbach, R. (2015). Magnetic Field Measurements Using Zeeman Splitting on the SMP Diode at Sandia National Labs [Conference Poster]. https://www.osti.gov/biblio/1334576

Renk, T.J., Simpson, S., Johnston, M.D., Leckbee, J., Webb, T.J., Mazarakis, M.G., Kiefer, M.L., Zier, J., & Weber, B. (2015). Anode heating/Cleaning and its effects on diode impedance in Self-Magnetic Pinch (SMP) Experiments [Conference Poster]. https://www.osti.gov/biblio/1332854