Temporal change of an extracted H− current by injecting pulse laser light into the extraction region of an H− ion source
Temporal change of an extracted H− current by injecting pulse laser light into the extraction region of an H− ion source
复制标题
通过将脉冲激光注入 H− 离子源的提取区域，提取的 H− 电流随时间变化
DOI：
10.1063/1.1427757
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发表时间：
2002
影响因子：
1.6
通讯作者：
M. Sasao
中科院分区：
文献类型：
--
作者：
Y. Matsumoto;M. Wada;T. Kasuya;M. Sasao
通过向离子源等离子体注入Nd-YAG激光束，测量了从量产型负离子源中提取的H束电流的时间变化。测量到的变化约为直流H束电流的0.3%。用没有光分离信号的氩等离子体验证了该方法的有效性。通过改变激光束中心与等离子体栅格之间的距离，研究了局部H -密度对提取光束的贡献。结果表明，在距离激光束中心至等离子体栅格表面约8mm处，对激光的贡献最大。
The temporal change of the H− beam current extracted from a volume-production-type negative ion source by injecting a Nd-YAG laser beam into the ion source plasma was measured. The measured change was about 0.3% of the dc H− beam current. The validity of the method was confirmed using Ar plasma which showed no photodetachment signal. The contribution of the local H− density upon the extracted beam was investigated by changing the distance between the center of the laser beam and the plasma grid. The result showed that the contribution took the maximum at about 8 mm distance from the laser beam center to the plasma grid surface.