Implosion dynamics and radiation features of planar, compact cylindrical, and nested wire arrays on 1 MA, 100 ns z-pinch generators

ORAL

Abstract

Plasma formation and implosion features of planar wire arrays (PWA), compact cylindrical wire arrays (CWA), and low-wire number nested wire arrays (NWA) of the small size (6-15 mm) were studied on the 1 MA, 100 ns UNR Zebra and Cornell COBRA generators. The powers and yields were maximum for Mo double PWA, followed by W compact CWA and PWA, Mo single PWA and compact CWA, stainless steel (SS304) and Al compact CWAs, and Al/SS304 and SS304/SS304 NWAs. Despite different implosion dynamics of PWAs and compact CWAs they formed plasma that radiated similar yields and powers. The possibility of radiation pulse shaping by varying geometry and materials of PWAs and NWAs will be discussed. Simulations with Wire Dynamics Model and 2D MHD model with enhanced resistivity will be presented. Work was supported by DOE/NNSA under Coop. Agr. DE-FC52-06NA27586, DE-FC52-06NA27588, DE-F03-02NA00057, and in part by DE-FC52 06NA27616.

–

Authors

  • V.L. Kantsyrev

    University of Nevada, Reno

  • A.S. Safronova

    University of Nevada, Reno

  • A.A. Esaulov

    University of Nevada, Reno

  • K. Williamson

    University of Nevada, Reno

  • I. Shrestha

    University of Nevada, Reno

  • G. Osborne

    University of Nevada, Reno

  • N.D. Ouart

    University of Nevada, Reno

  • M.F. Yilmaz

    University of Nevada, Reno

  • V. Shlyaptseva

    University of Nevada, Reno

  • J. Greenly

    Cornell University Laboratory of Plasma Studies, Cornell University, Laboratory of Plasma Studies, Cornell University

  • J. Douglass

    Cornell University

  • R. McBride

    Cornell University

  • D.A. Chalenski

    Cornell University Laboratory of Plasma Studies, Cornell University

  • David Hammer

    Cornell University, Cornell University, Ithaca, NY

  • B. Kusse

    Cornell University, Cornell University Laboratory of Plasma Studies, Laboratory of Plasma Studies, Cornell University

  • L.I. Rudakov

    Icarus Res. Inc.

  • A.S. Chuvatin

    Ecole Polytechnique