强激光与粒子束2016，Vol.28Issue(4)：190-195,6.DOI:10.11884/HPLPB201628.045107
磁场引起的潘宁离子源阻抗变化研究
Impact of magnetic field on Penning discharge
摘要
Abstract
In this article the Penning-type negative hydrogen ion source of 11 MeV compact cyclotron is studied.This ion source works in arc-mode.By changing the magnetic field strength,the impact of the magnetic field on ion source's work situa-tion is analyzed.These issues are analyzed in the article:the mechanical properties of sustained discharge in the ion source,the impedance change of the ion source when the magnetic field varies,abnormal glow observed at the extraction slit.In this experi-ment,when hydrogen flow is stabled at 6 mL/min,changing the magnetic strength will influence Penning discharge.The result indicates that at strong magnetic field condition,the plasma conductivity almost does not change;but when the magnetic strength gets weak (less than 0.15 T),the plasma resistivity will increase rapidly,and there is a fierce discharge/glow of plasma brighte-ning rapidly in this condition.Some inspiration in the design of PIG source are got from this experiment,and we are trying to ana-lyze the probable microcosmic physics mechanism of this phenomenon in the discussion.关键词
潘宁离子源/等离子体/等离子体电阻/磁场/电阻突变Key words
Penning ion source/plasma/resistivity of plasma/magnetic field/saltation of resistivity分类
数理科学引用本文复制引用
陈宇航,龙继东,刘尔祥,石金水..磁场引起的潘宁离子源阻抗变化研究[J].强激光与粒子束,2016,28(4):190-195,6.基金项目
中国工程物理研究院军民两用技术开发项目(JM200701) （JM200701）
