Effect of the axial magnetic field on a metallic gas-puff pinch implosion

A. G. Rousskikh, A. S. Zhigalin, V. I. Oreshkin, V. Frolova, A. L. Velikovich, G. Yu Yushkov, R. B. Baksht

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)

Abstract

The effect of an axial magnetic field Bz on an imploding metallic gas-puff Z-pinch was studied using 2D time-gated visible self-emission imaging. Experiments were performed on the IMRI-5 generator (450 kA, 450 ns). The ambient field Bz was varied from 0.15 to 1.35 T. It was found that the initial density profile of a metallic gas-puff Z-pinch can be approximated by a power law. Time-gated images showed that the magneto-Rayleigh-Taylor instabilities were suppressed during the run-in phase both without axial magnetic field and with axial magnetic field. Helical instability structures were detected during the stagnation phase for Bz < 1.1 T. For Bz = 1.35 T, the pinch plasma boundary was observed to be stable in both run-in and stagnation phases. When a magnetic field of 0.3 T was applied to the pinch, the soft x-ray energy was about twice that generated without axial magnetic field, mostly due to longer dwell time at stagnation.

Original languageEnglish
Article number063502
JournalPhysics of Plasmas
Volume23
Issue number6
DOIs
Publication statusPublished - 1 Jun 2016

ASJC Scopus subject areas

  • Condensed Matter Physics

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