Journal
PHYSICS OF PLASMAS
Volume 23, Issue 6, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4953048
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- Russian Science Foundation [16-19-10142]
- Russian Science Foundation [16-19-10142] Funding Source: Russian Science Foundation
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The effect of an axial magnetic field B-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-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-z < 1.1 T. For B-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. Published by AIP Publishing.
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