Plasma density measurements in tungsten wire-array Z-pinches

被引：10

作者：

Douglass, J. D. ^{[1
]}

Hammer, D. A. ^{[1
]}

Pikuz, S. A. ^{[1
]}

Shelkovenko, T. A. ^{[1
]}

Blesener, K. S. ^{[1
]}

机构：

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

来源：

PHYSICS OF PLASMAS | 2012年 / 19卷 / 07期

关键词：

IMPLOSION;

D O I：

10.1063/1.4736986

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：

Measurements of the plasma density profile near the exploding wires in 1 MA tungsten (W) wire-array Z-pinches have been made using calibrated x-ray absorption. As many as 5 x-ray images per pulse were obtained between 65 and 160 ns after the start of the 100 ns rise time current pulse. Measured W ion densities range from above 10(19)/cm(3) close to the wire to similar to 10(17)/cm(3) about 1 mm away from the wire in the plasma stream. After accurate geometrical registration of the individual wires in each successive image in a pulse using the Genetic Algorithm, the temporal evolution of the axial modulation wavelength distribution of the ablation rate from the wires in each array and the global mass-ablation rate as a function of time are presented. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4736986]

引用

页数：9

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