Bulletin of the American Physical Society
64th Annual Meeting of the APS Division of Plasma Physics
Volume 67, Number 15
Monday–Friday, October 17–21, 2022; Spokane, Washington
Session YO04: Z-Pinch, X-Pinch, and Dense Plasma Focus
9:30 AM–12:06 PM,
Friday, October 21, 2022
Room: Ballroom 111 A
Chair: Matthias Geissel, SNL
Abstract: YO04.00005 : Understanding electrode plasma formation on wires and thin foils via vacuum ultraviolet spectroscopy of desorbed surface contaminants*
10:18 AM–10:30 AM
Presenter:
Trevor J Smith
(University of Michigan)
Authors:
Trevor J Smith
(University of Michigan)
Mark D Johnston
(University of New Mexico)
Nicholas M Jordan
(University of Michigan)
Michael E Cuneo
(Sandia National Laboratories)
Jens Schwarz
(Sandia National Laboratories)
Ryan D McBride
(University of Michigan)
We review experimental results on a smaller scaled facility (≤ 1 MA) to characterize the contaminants using the plasma temperature, density, and determination of the species and their ionized states during surface desorption. These results are collected from a vacuum ultraviolet spectrometer developed to measure the spectra from wires and foils of varying thicknesses (5 µm – 1 mm) and materials (aluminum and stainless steel). To quickly compare theoretical values to experimental results, a newly developed, semi-analytic desorption and heating model is then used.
1. W.A. Stygar et al., Phys. Rev. S.T.-A.B. 12, 120401 (2009)
2. M.R. Gomez et al., Phys. Rev. A.B. 20, 010401 (2017)
3. T.J. Smith et al., Rev. Sci. Inst. 92, 053550 (2021)
*This work was supported by Sandia National Labs through the ASAP Mission Campaign as well as the LDRD Program, Project No. 222323. Sandia is a multi-mission lab managed and operated by National Technology and Engineering Solutions of Sandia, LLC., a wholly owned subsidiary of Honeywell International, Inc., for the US DOE's NNSA under contract DE-NA-0003525. This paper describes objective technical results and analysis. Any subjective views or opinions that might be expressed in the paper do not necessarily represent the views of the US DOE or the US Government.
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