Publications

Coburn, J.D., Kolasinski, R., Truong, D.D., Wang, H., Ren, J., Lasnier, C., Marini, C., Sugar, J.D., Nygren, R., Abrams, T., Watkins, J., & Watkins, J. (2022). 3D Heat Flux and Melt Motion Analysis of Angled Tungsten Samples on DIII-D [Conference Presentation]. 10.2172/2005497

Hood, R.T., Kolasinski, R., Truong, D.D., Whaley, J., Rudakov, D., Abrams, T., Watkins, J., Chames, J.M., Talin, A.A., & Talin, A.A. (2022). Development of rugged hydrogen sensors for first wall charge-exchange neutral flux measurement [Conference Poster]. 10.2172/2003535

Kolasinski, R., Coburn, J.D., Truong, D.D., Watkins, J., Abrams, T., Fang, Z.Z., Nygren, R., Leonard, A., Ren, J., Wang, H., Whaley, J., Bykov, I., Glass, F., Herfindal, J., Hood, R.T., Lasnier, C., Marini, C., McLean, A., Moser, A., … York, W. (2022). Recrystallization, melting, and erosion of dispersoid-strengthened tungsten materials during exposure to DIII-D plasmas [Conference Presentation]. 10.2172/2003537

Coburn, J.D., Kolasinski, R., Truong, D.D., Lasnier, C., Marini, C., Ren, J., Wang, H., Nygren, R., Sugar, J.D., Abrams, T., Watkins, J., & Watkins, J. (2022). 3D Heat Flux and Melt Motion Analysis of Angled Tungsten Samples on DIII-D [Conference Poster]. 10.2172/2003551

Hood, R.T., Kolasinski, R., Truong, D.D., Whaley, J.A., Rudakov, D., Abrams, T., Watkins, J., Talin, A.A., & Talin, A.A. (2021). Development of rugged hydrogen sensors for measuring charge-exchange neutral flux at the wall and divertor [Conference Presentation]. 10.2172/1895018

Hood, R.T., Truong, D.D., Whaley, J.A., Abrams, T., Watkins, J., Talin, A.A., & Talin, A.A. (2021). Development of rugged hydrogen sensors for measuring charge-exchange neutral flux at the wall and divertor [Presentation]. https://www.osti.gov/biblio/1888966

Watkins, J., Wang, H.Q., Thomas, D., Murphy, C., Taussig, D., Ren, J., Chrobak, C., Guo, H.Y., & Guo, H.Y. (2021). Langmuir probe array for the small angle slot divertor in DIII-D [Conference Paper]. Review of Scientific Instruments. 10.1063/5.0043870

Ren, J., Donovan, D., Watkins, J., Wang, H.Q., Murphy, C., Thomas, D., Boivin, R., Rudakov, R., Unterberg, E., & Unterberg, E. (2021). Development of Surface Eroding Thermocouples in Small Angle Slot Divertor in DIII-D [Conference Proceeding]. 10.1109/TPS.2019.2943085

Casali, L., Osborne, T.H., Wang, H., Meier, E.T., Ren, J., Shafer, M.W., Watkins, J., & Watkins, J. (2020). Improved core-edge compatibility using impurity seeding in the small angle slot (SAS) divertor at DIII-D. Physics of Plasmas, 27(6). https://doi.org/10.1063/1.5144693

Wang, H.Q., Guo, H.Y., Leonard, A.W., Osborne, T.H., Thomas, D.M., Eldon, D., Xu, G.S., Wu, X.Q., Xu, J.C., Wang, L., Wang, Y.F., Liu, J.B., Groth, M., Jaervinen, A.E., Watkins, J., Stangeby, P.C., Turco, F., & Turco, F. (2020). First Evidence of Local E× B Drift in the Divertor Influencing the Structure and Stability of Confined Plasma near the Edge of Fusion Devices. Physical Review Letters, 124(19). https://doi.org/10.1103/PhysRevLett.124.195002

Jaervinen, A.E., Allen, S.L., Eldon, D., Fenstermacher, M.E., Groth, M., Hill, D.N., Lasnier, C.J., Leonard, A.W., McLean, A.G., Moser, A.L., Porter, G.D., Rognlien, T.D., Samuell, C.M., Wang, H.Q., Watkins, J., & Watkins, J. (2020). Progress in DIII-D towards validating divertor power exhaust predictions. Nuclear Fusion, 60(5). https://doi.org/10.1088/1741-4326/ab7f5c

Moser, A.L., Casali, L., Covele, B.M., Leonard, A.W., Wang, H.Q., McLean, A.G., Shafer, M.W., Watkins, J., & Watkins, J. (2020). Separating divertor closure effects on divertor detachment and pedestal shape in DIII-D. Physics of Plasmas, 27(3). https://doi.org/10.1063/1.5109027

Wang, H.Q., Watkins, J., Guo, H.Y., Leonard, A.W., Thomas, D.M., Stepanenko, A.A., Krasheninnikov, S.I., & Krasheninnikov, S.I. (2020). Enhanced particle flux due to localized divertor MHD instability in DIII-D tokamak. Physics of Plasmas, 27(2). https://doi.org/10.1063/1.5140354

Bykov, I., Rudakov, D.L., Pigarov, A.Y., Hollmann, E.M., Guterl, J., Boedo, J.A., Chrobak, C.P., Abrams, T., Guo, H.Y., Lasnier, C.J., McLean, A.G., Wang, H.Q., Watkins, J., Thomas, D.M., & Thomas, D.M. (2020). Impact of divertor material on neutral recycling and discharge fueling in DIII-D [Conference Paper]. Physica Scripta. https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85084668301&origin=inward

Kolasinski, R., Buchenauer, D.A., Wampler, W.R., Fang, Z.Z., Lasnier, C.J., Whaley, J.A., Watkins, J., Unterberg, E.A., Guo, H., & Guo, H. (2019). Retention properties in displacement damaged ultra-fine grain tungsten exposed to divertor plasma. Nuclear Materials and Energy, 20(C). https://doi.org/10.1016/j.nme.2019.100689

Wampler, W.R., Unterberg, E.A., Briesmeister, A.R., Zach, M.P., Abrams, T., Guo, H.Y., Thomas, D.M., Barton, J.L., Watkins, J., Donovan, D.C., Duran, J.D., Nichols, J., Elder, J.D., Stangeby, P.C., Rudakov, D.L., & Rudakov, D.L. (2019). CHARACTERIZATION OF SOL IMPURITY TRANSPORT AND DIVERTOR LEAKAGE USING ISOTOPIC TUNGSTEN DURING THE DIII-D METAL RINGS CAMPAIGN [Conference Poster]. https://www.osti.gov/biblio/1639521

Ding, R., Xie, H., Ding, F., Wampler, W.R., Wang, L., Chen, J.L., Komm, M., Dejarnac, R., Rudakov, D.L., Bykov, I., Abrams, T., Chan, V.S., Guo, H.Y., Snyder, P.B., Elder, J.D., Stangeby, P.C., Wang, H.Q., Watkins, J., Unterberg, E.A., … Kirschner, A. (2019). MODEL VALIDATION ON EAST AND DIII-D EXPERIMENTS TOWARDS UNDERSTANDING OF HIGH-Z MATERIAL EROSION AND MIGRATION IN A MIXED MATERIALS ENVIRONMENT [Conference Poster]. https://www.osti.gov/biblio/1639520

Barton, J.L., Buchenauer, D.A., Wampler, W.R., Rudakov, D., Fang, Z., Lasnier, C., Watkins, J., Unterberg, E., Guo, H., & Guo, H. (2018). Attractive retention properties in displacement damaged ultra-fine grain tungsten exposed to divertor plasma [Conference Poster]. https://www.osti.gov/biblio/1532821

Wampler, W.R., Watkins, J., Rudakov, D.L., McLean, A.G., Unterberg, E.A., Stangeby, P.C., & Stangeby, P.C. (2017). Measurements of tungsten migration in the DIII-D divertor. Physica Scripta, 2017(T170). 10.1088/1402-4896/aa8d5a

Hinson, E.T., Schmitz, O., Wampler, W.R., Frerichs, H., Abrams, T., Briesemeister, A., Rudakov, D.L., Unterberg, E.A., Watkins, J., Wang, H.Q., & Wang, H.Q. (2017). Study of the impact of resonant magnetic perturbation fields on gross tungsten erosion using DiMES samples in DIII-D. Physica Scripta, 2017(T170). 10.1088/1402-4896/aa9002

Wampler, W.R., Watkins, J., Rudakov, D., McLean, A., Unterberg, E., Stangeby, P., & Stangeby, P. (2017). Measurements of Tungsten Migration in the DIII-D Divertor [Conference Poster]. 10.1088/1402-4896/aa8d5a

Wampler, W.R., Watkins, J., Rudakov, D., McLean, A., Unterberg, E., Stangeby, P., & Stangeby, P. (2017). Measurements of Tungsten Migration in the DIII-D Divertor [Conference Poster]. https://doi.org/10.1088/1402-4896/aa8d5a

Wampler, W.R., Abrams, T., Watkins, J., & Watkins, J. (2017). The inter-ELM tungsten erosion profile in DIII-D H-mode discharges and benchmarking with ERO+OEDGE modeling. Nuclear Fusion, 57(5). https://doi.org/10.1088/1741-4326/aa66b2

Wampler, W.R., Chrobak, C.P., Watkins, J., Buchenauer, D.A., & Buchenauer, D.A. (2016). Characterizing Low-Z Erosion and Deposition in the DIII-D Divertor Using Auminum [Conference Poster]. https://www.osti.gov/biblio/1418104

Wampler, W.R., Abrams, T., Watkins, J., & Watkins, J. (2016). The inter-ELM W erosion profile in DIII-D H-mode discharges and benchmarking with ERO modeling [Conference Poster]. https://www.osti.gov/biblio/1418103

Wampler, W.R., Guo, H.Y., Buchenauer, D.A., Nygren, R., Watkins, J., & Watkins, J. (2016). Developing and validating advanced divertor solutions on DIII-D for next-step fusion devices. Nuclear Fusion, 56(12). 10.1088/0029-5515/56/12/126010

Nygren, R., Watkins, J., Barton, J.L., & Barton, J.L. (2016). Thermal Management of Tungsten Leading Edges in DIII-D and ITER [Conference Poster]. https://www.osti.gov/biblio/1380223

Nygren, R., Watkins, J., Barton, J.L., & Barton, J.L. (2016). Thermal Management of Tungsten Leading Edges in DIII-D and ITER [Conference Poster]. https://www.osti.gov/biblio/1380224

Buchenauer, D.A., Kolasinski, R., Watkins, J., Mills, B.E., Friddle, R., Nygren, R., Wampler, W.R., Guo, H., Rudakov, D., Shimada, M., Fang, Z.Z., Ren, C., Doerner, R., Baldwin, M., Oya, Y., Michibayashi, K., & Michibayashi, K. (2016). Institutional Overview - Sandia National Labs [Presentation]. https://www.osti.gov/biblio/1374691

Wampler, W.R., Rudakov, D.L., Watkins, J., Buchenauer, D.A., & Buchenauer, D.A. (2014). Control of High-Z PFC Erosion by Local Gas Injection in DIII-D [Conference Poster]. https://www.osti.gov/biblio/1315005

Buchenauer, D.A., Nygren, R., Watkins, J., & Watkins, J. (2013). Divertor Sheath Power Studies in DIII-D Using Fixed Langmuir Probes and 3-D Modeling of Tile Heat Flows [Conference]. https://www.osti.gov/biblio/1115479

Buchenauer, D.A., Nygren, R., Watkins, J., & Watkins, J. (2013). Divertor Sheath Power Studies in DIII-D Using Fixed Langmuir Probes and 3-D Modeling of Tile Heat Flows [Conference]. https://www.osti.gov/biblio/1079171

Buchenauer, D.A., Watkins, J., & Watkins, J. (2013). Sheath Power Transmission Studies on DIII-D Divertor and GIXRD Measurements of Tungsten Fuzz [Conference]. https://www.osti.gov/biblio/1072608

Wampler, W.R., Watkins, J., Buchenauer, D.A., & Buchenauer, D.A. (2012). Measurement of net versus gross erosion of molybdenum divertor surface in DIII-D [Conference]. https://www.osti.gov/biblio/1116831

Donovan, D., Buchenauer, D.A., Watkins, J., & Watkins, J. (2012). Sheath Power Transmission and Divertor Probe Analysis [Conference]. https://www.osti.gov/biblio/1064169

Kolasinski, R., Donovan, D., Cowgill, D.F., Karnesky, R.A., Felter, T.E., Bartelt, N.C., Wampler, W.R., Watkins, J., Thurmer, K., & Thurmer, K. (2011). Overview of PMI at SNL-CA [Conference]. https://www.osti.gov/biblio/1106229

Wampler, W.R., Watkins, J., & Watkins, J. (2010). OEDGE modeling of the DIII-D double null 13CH4 puffing experiment [Conference]. https://www.osti.gov/biblio/1000281

Watkins, J. (2007). DiMES studies of temperature dependence of carbon erosion and re-deposition in the DIII-D divertor. Physica Scripta. https://www.osti.gov/biblio/1143314

Watkins, J. (2007). First tests of molybdenum mirrors for ITER diagnostics in DIII-D divertor. Review of Scientific Instruments. https://www.osti.gov/biblio/1143359

Wampler, W.R., Watkins, J., & Watkins, J. (2006). Transport and deposition of 13C from methane injection into partially detached divertor H-mode plasmas in DIII-D [Conference]. https://www.osti.gov/biblio/1266166

Wampler, W.R., Watkins, J., & Watkins, J. (2004). Far SOL transport and mail wall plasma interaction in DIII-D [Conference]. https://www.osti.gov/biblio/1144077

Wampler, W.R., Watkins, J., & Watkins, J. (2004). DIVIMP modeling of the toroidally-symmetrical injection of 13 CH4 into the upper SOL of DIII-D [Conference]. https://www.osti.gov/biblio/952803

Watkins, J. (1996). A fast reciprocating Langmuir probe for the DIII-D divertor [Conference]. https://www.osti.gov/biblio/406151

Watkins, J. (1996). Reciprocating and fixed probe measurements of n{sub e} and T{sub e} in the DIII-D divertor [Conference]. https://www.osti.gov/biblio/405718

Watkins, J. (1989). Power deposition on toroidal limiters in TEXTOR [Conference]. https://www.osti.gov/biblio/5089049

Watkins, J. (1989). Observation of synchrotron radiation from runaway discharges [Conference]. https://www.osti.gov/biblio/5144467

Watkins, J. (1988). First pump limiter experiments in TORE SUPRA [Conference]. https://www.osti.gov/biblio/5115006

Watkins, J. (1988). Particle exhaust during neutral beam heating with the toroidal belt pump limiter ALT-II ( Advanced Limiter Test-II) TEXTOR [Conference]. https://www.osti.gov/biblio/5115007