Parallel Operation of Multiple Closely Spaced Small Aspect Ratio Rod Pinches
Abstract
A series of simulations and experiments to resolve questions about the operation of arrays of closely spaced small aspect ratio rod pinches has been performed. Design and post-shot analysis of the experimental results are supported by 3D particle-in-cell simulations. Both simulations and experiments support these conclusions. Penetration of current to the interior of the array appears to be efficient, as the current on the center rods is essentially equal to the current on the outer rods. Current loss in the feed due to the formation of magnetic nulls was avoided in these experiments by design of the feed surface of the cathode and control of the gap to keep the electric fields on the cathode below the emission threshold. Some asymmetry in the electron flow to the rod was observed, but the flow appeared to symmetrize as it reached the end of the rod. Interaction between the rod pinches can be controlled to allow the stable and consistent operation of arrays of rod pinches.
- Authors:
-
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- National Security Technologies, LLC. (NSTec), Las Vegas, NV (United States)
- Voss Scientific, Inc., Albuquerque, NM (United States)
- Publication Date:
- Research Org.:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1184480
- Report Number(s):
- SAND-2014-18744J
Journal ID: ISSN 0093-3813; 540333
- Grant/Contract Number:
- AC04-94AL85000
- Resource Type:
- Accepted Manuscript
- Journal Name:
- IEEE Transactions on Plasma Science
- Additional Journal Information:
- Journal Volume: 43; Journal Issue: 1; Journal ID: ISSN 0093-3813
- Publisher:
- IEEE
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY
Citation Formats
Harper-Slaboszewicz, Victor J., Leckbee, Joshua, Bennett, Nichelle, Madrid, Elizabeth A., Rose, David V., Thoma, Carsten, Welch, Dale R., Lake, Patrick W., and McCourt, Andrew L. Parallel Operation of Multiple Closely Spaced Small Aspect Ratio Rod Pinches. United States: N. p., 2014.
Web. doi:10.1109/TPS.2014.2376272.
Harper-Slaboszewicz, Victor J., Leckbee, Joshua, Bennett, Nichelle, Madrid, Elizabeth A., Rose, David V., Thoma, Carsten, Welch, Dale R., Lake, Patrick W., & McCourt, Andrew L. Parallel Operation of Multiple Closely Spaced Small Aspect Ratio Rod Pinches. United States. https://doi.org/10.1109/TPS.2014.2376272
Harper-Slaboszewicz, Victor J., Leckbee, Joshua, Bennett, Nichelle, Madrid, Elizabeth A., Rose, David V., Thoma, Carsten, Welch, Dale R., Lake, Patrick W., and McCourt, Andrew L. Wed .
"Parallel Operation of Multiple Closely Spaced Small Aspect Ratio Rod Pinches". United States. https://doi.org/10.1109/TPS.2014.2376272. https://www.osti.gov/servlets/purl/1184480.
@article{osti_1184480,
title = {Parallel Operation of Multiple Closely Spaced Small Aspect Ratio Rod Pinches},
author = {Harper-Slaboszewicz, Victor J. and Leckbee, Joshua and Bennett, Nichelle and Madrid, Elizabeth A. and Rose, David V. and Thoma, Carsten and Welch, Dale R. and Lake, Patrick W. and McCourt, Andrew L.},
abstractNote = {A series of simulations and experiments to resolve questions about the operation of arrays of closely spaced small aspect ratio rod pinches has been performed. Design and post-shot analysis of the experimental results are supported by 3D particle-in-cell simulations. Both simulations and experiments support these conclusions. Penetration of current to the interior of the array appears to be efficient, as the current on the center rods is essentially equal to the current on the outer rods. Current loss in the feed due to the formation of magnetic nulls was avoided in these experiments by design of the feed surface of the cathode and control of the gap to keep the electric fields on the cathode below the emission threshold. Some asymmetry in the electron flow to the rod was observed, but the flow appeared to symmetrize as it reached the end of the rod. Interaction between the rod pinches can be controlled to allow the stable and consistent operation of arrays of rod pinches.},
doi = {10.1109/TPS.2014.2376272},
journal = {IEEE Transactions on Plasma Science},
number = 1,
volume = 43,
place = {United States},
year = {Wed Dec 10 00:00:00 EST 2014},
month = {Wed Dec 10 00:00:00 EST 2014}
}
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