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Title: Enhancing the x-ray output of a single-wire explosion with a gas-puff based plasma opening switch

Abstract

Here, we present experiments performed on the 1 MA COBRA generator using a low density, annular, gas-puff z-pinch implosion as an opening switch to rapidly transfer a current pulse into a single metal wire on axis. This gas-puff on axial wire configuration was studied for its promise as an opening switch and as a means of enhancing the x-ray output of the wire. We demonstrate that current can be switched from the gas-puff plasma into the wire, and that the timing of the switch can be controlled by the gas-puff plenum backing pressure. X-ray detector measurements indicate that for low plenum pressure Kr or Xe shots with a copper wire, this configuration can offer a significant enhancement in the peak intensity and temporal distribution of radiation in the 1–10 keV range.

Authors:
 [1];  [2];  [3];  [3];  [3];  [3]; ORCiD logo [3];  [3];  [3]; ORCiD logo [3];  [3]; ORCiD logo [2]
  1. Cornell Univ., Ithaca, NY (United States); Naval Research Lab, Washington, D.C. (United States)
  2. Naval Research Lab, Washington, D.C. (United States)
  3. Cornell Univ., Ithaca, NY (United States)
Publication Date:
Research Org.:
Cornell Univ., Ithaca, NY (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1499673
Grant/Contract Number:  
NA0003764
Resource Type:
Accepted Manuscript
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 25; Journal Issue: 2; Journal ID: ISSN 1070-664X
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY

Citation Formats

Engelbrecht, Joseph T., Ouart, Nicholas D., Qi, Niansheng, de Grouchy, Philip W., Shelkovenko, Tatiana A., Pikuz, Sergey A., Banasek, Jacob T., Potter, William M., Rocco, Sophia V., Hammer, David A., Kusse, Bruce R., and Giuliani, John L. Enhancing the x-ray output of a single-wire explosion with a gas-puff based plasma opening switch. United States: N. p., 2018. Web. doi:10.1063/1.5019378.
Engelbrecht, Joseph T., Ouart, Nicholas D., Qi, Niansheng, de Grouchy, Philip W., Shelkovenko, Tatiana A., Pikuz, Sergey A., Banasek, Jacob T., Potter, William M., Rocco, Sophia V., Hammer, David A., Kusse, Bruce R., & Giuliani, John L. Enhancing the x-ray output of a single-wire explosion with a gas-puff based plasma opening switch. United States. doi:10.1063/1.5019378.
Engelbrecht, Joseph T., Ouart, Nicholas D., Qi, Niansheng, de Grouchy, Philip W., Shelkovenko, Tatiana A., Pikuz, Sergey A., Banasek, Jacob T., Potter, William M., Rocco, Sophia V., Hammer, David A., Kusse, Bruce R., and Giuliani, John L. Thu . "Enhancing the x-ray output of a single-wire explosion with a gas-puff based plasma opening switch". United States. doi:10.1063/1.5019378. https://www.osti.gov/servlets/purl/1499673.
@article{osti_1499673,
title = {Enhancing the x-ray output of a single-wire explosion with a gas-puff based plasma opening switch},
author = {Engelbrecht, Joseph T. and Ouart, Nicholas D. and Qi, Niansheng and de Grouchy, Philip W. and Shelkovenko, Tatiana A. and Pikuz, Sergey A. and Banasek, Jacob T. and Potter, William M. and Rocco, Sophia V. and Hammer, David A. and Kusse, Bruce R. and Giuliani, John L.},
abstractNote = {Here, we present experiments performed on the 1 MA COBRA generator using a low density, annular, gas-puff z-pinch implosion as an opening switch to rapidly transfer a current pulse into a single metal wire on axis. This gas-puff on axial wire configuration was studied for its promise as an opening switch and as a means of enhancing the x-ray output of the wire. We demonstrate that current can be switched from the gas-puff plasma into the wire, and that the timing of the switch can be controlled by the gas-puff plenum backing pressure. X-ray detector measurements indicate that for low plenum pressure Kr or Xe shots with a copper wire, this configuration can offer a significant enhancement in the peak intensity and temporal distribution of radiation in the 1–10 keV range.},
doi = {10.1063/1.5019378},
journal = {Physics of Plasmas},
number = 2,
volume = 25,
place = {United States},
year = {2018},
month = {2}
}

Journal Article:
Free Publicly Available Full Text
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Cited by: 2 works
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Figures / Tables:

FIG. 1. FIG. 1. : Photograph of the load hardware showing (1) gas-puff valve outer nozzle, (2) wire, (3) brass cathode insert, and (4) steel anode mesh.

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