Helical plasma striations in liners in the presence of an external axial magnetic field

被引：27
|
作者：
Atoyan, L. [1 ]
Hammer, D. A. [1 ]
Kusse, B. R. [1 ]
Byvank, T. [1 ]
Cahill, A. D. [1 ]
Greenly, J. B. [1 ]
Pikuz, S. A. [1 ,2 ]
Shelkovenko, T. A. [1 ,2 ]
机构：
[1] Cornell Univ, Plasma Studies Lab, Rhodes Hall, Ithaca, NY 14853 USA
[2] PN Lebedev Phys Inst, Leninsky Prospect 53, Moscow 117924, Russia
来源：
PHYSICS OF PLASMAS | 2016年 / 23卷 / 02期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1063/1.4942787
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
Awe et al. found on the 20 MA Z machine [Acta Phys. Pol. A 115, 956 (2009)] that applying an externally generated axial magnetic field to an imploding liner leads to a helical pattern in the liner when viewed with soft x-ray radiography ([Phys. Rev. Lett. 111, 235005 (2013)] and [Phys. Plasmas 21, 056303 (2014)]). Here, we show that this phenomenon is also observed in extreme ultraviolet self-emission images of 10 mm long cylindrical metal liners having varying diameters and varying wall thicknesses on a 1 MA, 100-200 ns pulsed power generator. The magnetic field in these experiments is created using either twisted return current wires positioned close to the liner, generating a time-varying B-z, or a Helmholtz coil, generating a steady-state B-z. (C) 2016 AIP Publishing LLC.
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页数：7
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