对负离子源射频驱动器进行磁场改造的实验结果

IF 1.6 3区物理与天体物理 Q3 PHYSICS, FLUIDS & PLASMAS

Plasma Science & Technology Pub Date : 2023-11-28 DOI:10.1088/2058-6272/ad1043

Junwei Xie, Yahong Xie, Jianglong Wei, L. Liang, Xu-Feng Peng, Yuwen Yang, Y. Gu, Chundong Hu, Yuanlai Xie

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引用次数: 0

摘要

电流流经等离子体栅（PG）所产生的磁场是减少负离子源中负离子碰撞损耗的解决方案之一，它可以降低等离子体栅前的电子温度。然而，扩散到驱动器中的磁场会对等离子体外流产生一些影响。为了研究改变磁场对等离子体从驱动器流出的影响，我们在驱动器出口处引入了一个高磁导率铁制圆环（吸收器），它可以降低周围的磁场，改善等离子体的流出。铯注入萃取实验的结果表明，引入吸收器后，萃取栅（EG）电流和 H- 电流都有所增加。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Experimental results of a magnetic field modification to the radio frequency driver of a negative ion source

A magnetic field produced by a current flowing through the Plasma Grid (PG) is one of the solutions to reduce collisional loss of negative ions in a negative ion source, which reduces the electron temperature in front of the PG. However the magnetic field diffused into the driver has some influences on the plasma outflowing. In order to investigate the effect of changing this magnetic field on the outflowing of plasma from the driver a circular ring (absorber), of high permeability iron has been introduced at the driver exit, which can reduce the magnetic field around and improve plasma outflowing. With the application of absorber, the electron density is increased by about 35%, and the extraction current measured from extraction grid is increased from 1.02 A to 1.29 A. The results of extraction experiment with cesium injection show that both Extraction Grid (EG) current and H− current are increased when the absorber introduced.

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来源期刊

Plasma Science & Technology 物理-物理：流体与等离子体

CiteScore

3.10

自引率

11.80%

发文量

3773

审稿时长

3.8 months

期刊介绍： PST assists in advancing plasma science and technology by reporting important, novel, helpful and thought-provoking progress in this strongly multidisciplinary and interdisciplinary field, in a timely manner. A Publication of the Institute of Plasma Physics, Chinese Academy of Sciences and the Chinese Society of Theoretical and Applied Mechanics.