Time Resolved Single Wire Aluminum Optical Spectroscopy Experiments

POSTER

Abstract

We are exploring the conditions of plasmas generated by current-driven explosions of single fine aluminum wires, including temperatures, electron density, ionization state, and potentially magnetic field, using time-resolved emission spectroscopy at visible wavelengths. The experiments are being carried out with 15$\mu $m to 75$\mu $m Al wires driven by the 10kA, 500ns rise time LCP3 pulser. To determine the magnetic field, a new diagnostic method is being developed which makes use of Zeeman-effect-produced differences in the line shapes of two fine structure components of a multiplet that are equally broadened by Stark and Doppler effects. This method has been demonstrated at the Weizmann Institute of Science in laser-produced plasmas with lower energy densities [1]. \\[4pt] [1] E. Stambulchik, \textit{et al.} Phys. Rev. Lett. \textbf{98}, 225001 (2007).

*This research is supported by the DOE/NNSA joint program in HEDLP under contract DE-SC0002263 and by the NNSA SSAA program under DOE Cooperative Agreement DE-FC03-02NA00057.

Authors

  • Kate Blesener

    • Cornell University

  • Sergei Pikuz

    • Cornell University
    • Cornell University - LPS
    • Cornell University, Laboratory of Plasma Studies

  • Tania Shelkovenko

    • Cornell University - LPS
    • Cornell University
    • Cornell University, Laboratory of Plasma Studies

  • Isaac Blesener

    • Cornell University

  • David Chalenski

    • Laboratory of Plasma Studies, Cornell University
    • Cornell University

  • David Hammer

    • Cornell University
    • Cornell University, Laboratory of Plasma Studies

  • Yitzhak Maron

    • Weizmann Institute of Science
    • Weizmann Institute

  • Vladimir Bernshtam

    • Weizmann Institute of Science