Effect of radial-electric-field polarity on wire-array Z-pinch dynamics -: art. no. 135001

被引：26

作者：

Bland, SN

Lebedev, SV

Chittenden, JP

Ampleford, DJ

Bott, SC

Gómez, JA

Haines, MG

Hall, GN

Hammer, DA

Mitchell, IH

Palmer, JBA

机构：

[1] Univ London Imperial Coll Sci & Technol, Blackett Lab, London SW7 2BZ, England

[2] Pontificia Univ Catolica Chile, Santiago 4860, Chile

[3] Cornell Univ, Plasma Studies Lab, Ithaca, NY 14853 USA

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 95卷 / 13期

关键词：

D O I：

10.1103/PhysRevLett.95.135001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The formation of plasma in wire-array Z-pinch experiments was found to depend upon the polarity of the radial-electric field near the wires. Reversing the radial-electric field midway along the length of an array resulted in the ablation rate of one-half of the array being reduced by 50%, significantly delaying the start of its implosion and altering its acceleration towards the axis. The observed phenomena cannot be explained by the standard magnetohydrodynamic models of array behavior, suggesting that effects such as electron emission may be important, especially during wire initiation.

引用

页数：4

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