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

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.

doi:10.1063/1.5019378

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

Journal Article · 14 February 2018 · Physics of Plasmas

DOI: https://doi.org/10.1063/1.5019378 · OSTI ID:1499673

Engelbrecht, Joseph T. ^[1]; Ouart, Nicholas D. ^[2]; Qi, Niansheng ^[3]; de Grouchy, Philip W. ^[3]; Shelkovenko, Tatiana A. ^[3]; Pikuz, Sergey A. ^[3];

^[3]; Potter, William M. ^[3]; Rocco, Sophia V. ^[3];

^[3]; Kusse, Bruce R. ^[3];

^[2]

Cornell Univ., Ithaca, NY (United States); Naval Research Lab, Washington, D.C. (United States); Cornell University
Naval Research Lab, Washington, D.C. (United States)
Cornell Univ., Ithaca, NY (United States)

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.

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Research Organization:: Cornell Univ., Ithaca, NY (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: NA0003764

OSTI ID:: 1499673

Journal Information:: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 2 Vol. 25; ISSN 1070-664X

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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