On the Generation of Plasma Jets in the Kilojoule Plasma Focus Device

被引：2
|
作者：
Polukhin, S. N. [1 ]
Nikulin, V. Ya. [1 ]
Silin, P. V. [1 ]
机构：
[1] Russian Acad Sci, Lebedev Phys Inst, Moscow 119991, Russia
来源：
PLASMA PHYSICS REPORTS | 2022年 / 48卷 / 04期
关键词：
plasma focus; plasma jet; interferometry;
D O I：
10.1134/S1063780X22040110
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：
Laser-optic methods were used to study the properties of plasma jets generated in the KJ Plasma Focus device. Measurements of the plasma jet velocity were conducted immediately after its appearance. During the first 10 ns, the average velocity is about 5 X 10(7) cm/s, which corresponds to energy of 18 keV for the ions of nitrogen, which was the working gas of the PF setup. The jet density and velocity decrease manifold over distance of 2-3 cm from its generation point. The experiments confirm that the main reason of jet generation is the necking of the pinch. It was found that after the pinch decay, a new plasma column appears, which propagates in the axial direction.
引用
收藏
页码：346 / 354
页数：9
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