Observation of a very high electron current extraction mode in a hollow cathode discharge
Observation of a very high electron current extraction mode in a hollow cathode discharge
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DOI：
10.1063/1.355239
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发表时间：
1993-07
影响因子：
3.2
通讯作者：
A. Hershcovitch
中科院分区：
文献类型：
--
作者：
A. Hershcovitch
Hershcovitch、Kovarik和Prelec在J.Appl.Phys.67，671（1990）中的早期结果证明，在低压操作模式下，空心阴极放电可以具有双组分电子群，其中之一是具有对应于阴极电势的能量和约0.13 eV的热扩散的“快"电子群，这可以形成优秀电子枪的基础。在这种低压模式中提取的电子电流的调查表明存在一个狭窄的压力范围内，其特征在于非常高的电子电流提取。
Earlier results by Hershcovitch, Kovarik, and Prelec in J. Appl. Phys. 67, 671 (1990) proved that, in a low‐pressure operating mode, hollow cathode discharges can have a two‐component electron population, one of which is that of ‘‘fast’’ electrons having an energy corresponding to the cathode potential and a thermal spread of about 0.13 eV, which could form a basis for an excellent electron gun. Investigations of extracted electron currents in this low pressure mode indicate the existence of a narrow pressure range characterized by very high electron current extraction.