Formation and dynamics of plasma layers formed on the foil surface under the action of a high-current pulse

被引：21

作者：

Grabovskii, E. V. ^{[1
]}

Levashov, P. R.

Oleinik, G. M.

Olson, C. L.

Sasorov, P. V.

Smirnov, V. P.

Tkachenko, S. I.

Khishchenko, K. V.

机构：

[1] Troitsk Inst Innovat & Fus Res, Troitsk 142092, Moscow Oblast, Russia

[2] Joint Inst High Temp, Inst High Energy Dens, Moscow 125412, Russia

[3] Sandia Natl Labs, Albuquerque, NM 87185 USA

[4] Inst Theoret & Expt Phys, Moscow 117259, Russia

[5] Russian Res Ctr, IV Kurchatov Atom Energy Inst, Moscow 123182, Russia

来源：

PLASMA PHYSICS REPORTS | 2006年 / 32卷 / 09期

基金：

俄罗斯基础研究基金会;

关键词：

D O I：

10.1134/S1063780X06090029

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：

Results are presented from studies of the possibility of using a thin metal foil for recyclable vacuum transmission lines with magnetic insulation in a conceptual fusion reactor based on high-voltage high-current electromagnetic generators. Numerical simulations and experiments in the Angara-5-1 facility were carried out to determine both the threshold for the explosion of a foil heated by a current pulse and the parameters of the plasma layer formed at the foil surface. It was found experimentally that an additional plasma current channel forms on the surface of a 120-mu m stainless-steel foil at a linear current density of 0.25-0.5 MA/cm, which corresponds to a magnetic field of 0.3-0.6 MG. For the same conditions, one-dimensional computer simulations of the foil heating were performed in an MHD model by using a wide-range semiempirical equation of state for stainless steel. The calculated threshold for plasma generation on the foil surface is compared with the experimental data. The main parameters of the plasma layer are also calculated at linear current densities of 210 MA/cm, which far exceed the threshold current density. The plasma layer parameters as functions of the linear current density are determined for the case of an iron foil.

引用

页码：718 / 728

页数：11

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