Evolution of the shape of a high-current and moderate energy electron beam at its propagation through D2 at low pressure

被引：0

作者：

Akishev, Yu S. ^{[1
,2
]}

Karalnik, V. B. ^{[1
]}

Medvedev, M. A. ^{[1
]}

Petryakov, A. V. ^{[1
]}

Trushkin, N. I. ^{[1
]}

Shafikov, A. G. ^{[1
]}

机构：

[1] SRC RF TRINITI, Pushkovykh St 12, Troitsk 108840, Russia

[2] NRNU MEPhI, Kashirskoe Shosse 31, Moscow 115409, Russia

来源：

INTERNATIONAL CONFERENCE - THE PHYSICS OF LOW TEMPERATURE PLASMA (PLTP-2017) | 2017年 / 927卷

基金：

俄罗斯科学基金会;

关键词：

D O I：

10.1088/1742-6596/927/1/012023

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：

The paper presents the experimental data on the time-spatial evolution of electron beam that is formed and propagates in a dielectric tube of large volume filled with D2 at low pressure of 1-2 Torr. The e-beam is generated by gas discharge in a short gap powered by the stepwise high voltage with amplitude up to 25 kV. Initially, this discharge appears in a strongly over-voltage regime which is unstable and eventually (in several hundreds of ns) transits into abnormal glow discharge at the voltage about of 1.5 - 2.5 kV and the current amplitude of several hundreds of Amps. The every of the mentioned discharge regimes generates the e-beam with energy up to 25 and 2.5 keV respectively. The ability of the over-voltage gap to generate the high-and low-energy e-beams happening one by one can be of great interest for many applications. The features in spatial structures of high-energy and low-energy e-beams in the course of their propagation over long distance through deuterium at low pressure are revealed and discussed.

引用

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