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

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23 Citations (Scopus)


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
Issue number6
Publication statusPublished - 1 Jun 2016

ASJC Scopus subject areas

  • Condensed Matter Physics

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