Simultaneous time-gated measurements of K- and L-shell radiation from brass wire array implosions on Zebra

POSTER

Abstract

New experiments have simultaneously measured both the copper and zinc K- and L-shell radiation with two time-gated spectrometers on the 1 MA Zebra generator at the University of Nevada, Reno. This work extends the previous brass wire implosions which only used one time-gated spectrometer [Ouart \textit{et al.}, IEEE Trans. Plasma Sci. \textbf{38}, 631 (2010) and Ouart \textit{et al.}, HEDP \textbf{8}, 247 (2012)]. The diagnostic suite also includes time-integrated spatially resolved spectrometers, time-integrated and time-gated pinhole imaging, various x-ray diodes, Ni bolometers, a Faraday cup, and laser shadowgraphy. The L-shell radiation comes from ionization stages around the Ne-like charge state that is largely populated by a thermal electron energy distribution function, while the K-shell radiation is subsequently produced by electron beams removing an inner-shell electron. A multi-zone non-LTE copper and zinc pinch model will be used to model the radiation from experiments. Diagnostic analysis will be presented using contours of line ratios and powers.

*Work supported by DOE/NNSA. This research was performed while N. Ouart held a National Research Council Research Associateship Award at NRL.

Authors

  • N.D. Ouart

    • Plasma Physics Division, NRC/NRL Postdoc, Naval Research Laboratory
  • J.L. Giuliani

    • Plasma Physics Division, Naval Research Laboratory
  • A. Dasgupta

    • Plasma Physics Division, Naval Research Laboratory
  • A.S. Safronova

    • Univeristy of Nevada, Reno
  • V.L. Kantsyrev

    • Univeristy of Nevada, Reno
  • A.A. Esaulov

    • Univeristy of Nevada, Reno
  • I. Shrestha

    • Univeristy of Nevada, Reno
  • M.E. Weller

    • Univeristy of Nevada, Reno
  • V. Shlyaptseva

    • Univeristy of Nevada, Reno
  • G.C. Osborne

    • Univeristy of Nevada, Reno
  • A. Stafford

    • Univeristy of Nevada, Reno
  • S. Keim

    • Univeristy of Nevada, Reno
  • R.W. Clark

    • Berkeley Research Associates