Comparison of hollow cathode and Penning discharges for metastable He production
Comparison of hollow cathode and Penning discharges for metastable He production
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DOI：
10.1088/0963-0252/11/4/309
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发表时间：
2002-11
影响因子：
3.8
通讯作者：
D. Andruczyk;P. Feng;B. James;J. Howard
中科院分区：
文献类型：
--
作者：
D. Andruczyk;P. Feng;B. James;J. Howard
在直流放电条件下，利用空心阴极放电和潘宁放电研究了氦2 1 S单重态亚稳原子的产生。亚稳原子的密度通过使用21 S-31 P跃迁（501.57 nm）的原子吸收测量。等离子体电流的范围，从16至180毫安，和压力的范围，从100毫托至5托，进行了研究。这项工作的最终目的是生产的超音速亚稳态氦束等离子体诊断，特别是使用激光诱导荧光的电场测量。
The production of helium 2 1S singlet metastable atoms has been investigated using a hollow cathode discharge and a Penning discharge, under dc discharge conditions. The density of metastable atoms was measured by atomic absorption using the 2 1S–3 1P transition (501.57 nm). A range of plasma currents, varying from 16 to 180 mA, and a range of pressures, from 100 mTorr to 5 Torr, were investigated. This work is directed ultimately to the production of a supersonic metastable helium beam for plasma diagnostics, in particular the measurement of electric fields using laser induced fluorescence.