2-D SIMULATION FOR FOCUS OF ROTATING AND PROPAGATING ION-BEAM IN NEUTRAL GAS

被引：0
|
作者：
AOKI, T
NIU, K
机构：
[1] Department of Energy Sciences, The Graduate School at Nagatsuta, Tokyo Institute of Technology, Nagatsuta, Yokohama 227, Midori-ku
来源：
LASER AND PARTICLE BEAMS | 1990年 / 8卷 / 1-2期
关键词：
D O I：
10.1017/S0263034600007850
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Focusing processes of rotating and propagating proton beams in a neutral hydrogen gas are studied numerically by using a two-dimensional hybrid code. Processes including beam impact ionization, plasma avalanche and field emission are taken into consideration. The plasma formation time depends on the initial gas density and the beam intensity. When 2-Torr neutral gas is filled initially, enough plasma density is created by the rising part of the beam pulse, so that the main pulse is focused and forms a rotating and propagating-beam configuration. © 1990, Cambridge University Press. All rights reserved.
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页码：89 / 93
页数：5
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