Plasma instability inside solenoid with laser ion source

被引：3
|
作者：
Karino, Takahiro [1 ,2 ]
Okamura, Masahiro [2 ,3 ]
Kanesue, Takeshi [3 ]
Ikeda, Shunsuke [3 ]
Kawata, Shigeo [1 ]
机构：
[1] Utsunomiya Univ, Grad Sch Engn, Utsunomiya, Tochigi 3218585, Japan
[2] RIKEN Nishina Ctr Accelerator Based Sci, Wako, Saitama 3510198, Japan
[3] Brookhaven Natl Lab, Collider Accelerator Dept, Upton, NY 11973 USA
来源：
REVIEW OF SCIENTIFIC INSTRUMENTS | 2020年 / 91卷 / 05期
关键词：
FIELD;
D O I：
10.1063/1.5128512
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
Using a solenoid with a laser ion source can suppress divergence of the expanding plasma; however, it has been found that the plasma becomes unstable in a certain magnetic field region. In the previous research, instability of the plasma after the solenoid was found. In this study, we investigated how the plasma instability changes inside the solenoid. A Faraday cup was placed in the solenoid, and the unstable magnetic field range was investigated. This experiment was conducted while changing the Faraday cup position from the inlet to the outlet of the solenoid. By increasing the magnetic field strength, the Faraday cup position indicating a condition triggering instability moved toward upstream in the solenoid. In addition, the instability is gradually mitigated by transporting the laser ablation plasma through the rest of the solenoid. The detailed good working range of the solenoid for the Au1+ beam was also shown.
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收藏
页数：4
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