期刊
PLASMA PHYSICS AND CONTROLLED FUSION
卷 60, 期 7, 页码 -出版社
IOP Publishing Ltd
DOI: 10.1088/1361-6587/aac4fe
关键词
Z-pinch; wire array; precondition; double pulse current generator
资金
- National Natural Science Foundation of China [11675276, 51237006]
Suppression of the core-corona structure and wire ablation in wire array Z-pinches is investigated using a novel double pulse current generator 'Qin-1' facility. The 'Qin-1' facility allows coupling a similar to 10 kA 20 ns prepulse generator with a similar to 0.8 MA 160 ns main current generator. The tailored prepulse current preheats wires to a gaseous state and the time interval between the prepulse and the main current pulse allows formation of a more uniform mass distribution for the implosion. The implosion of a gasified two aluminum-wire array showed no ablation phase and allowed all array mass to participate in the implosion. The initial perturbations formed from the inhomogeneous ablation were suppressed, however, the magneto Rayleigh-Taylor (MRT) instability during the implosion was still significant and further researches on the generation and development of the MRT instabilities of this gasified wire array are needed.
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