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Author Rousskikh, A. G. ♦ Zhigalin, A. S. ♦ Frolova, V. ♦ Yushkov, G. Yu. ♦ Baksht, R. B. ♦ Oreshkin, V. I. ♦ Velikovich, A. L.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword PLASMA PHYSICS AND FUSION TECHNOLOGY ♦ DENSITY ♦ EMISSION ♦ HELICAL INSTABILITY ♦ IMAGES ♦ IMPLOSIONS ♦ MAGNETIC FIELDS ♦ PLASMA ♦ RAYLEIGH-TAYLOR INSTABILITY ♦ SOFT X RADIATION ♦ STAGNATION ♦ TWO-DIMENSIONAL SYSTEMS
Abstract The effect of an axial magnetic field B{sub z} 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 B{sub z} 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 B{sub z} < 1.1 T. For B{sub z} = 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.
ISSN 1070664X
Educational Use Research
Learning Resource Type Article
Publisher Date 2016-06-15
Publisher Place United States
Journal Physics of Plasmas
Volume Number 23
Issue Number 6


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