Measurements of Ions from High-Current Hollow Cathodes Using Electrostatic Energy Analyzer
Measurements of Ions from High-Current Hollow Cathodes Using Electrostatic Energy Analyzer
复制标题
使用静电能量分析仪测量高电流空心阴极中的离子
DOI：
10.2514/2.5601
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发表时间：
2000
影响因子：
1.9
通讯作者：
P. Wilbur
中科院分区：
文献类型：
--
作者：
I. Kameyama;P. Wilbur
用静电能量分析仪测量了高电流氙空心阴极发射离子的能量分布。观察到能量远大于电极间最大电位差的离子。这一结果与以前的延迟电位分析仪的数据是一致的，但静电能分析仪的数据显示出更复杂的结构。为了表征这些分布，它们不是与简单的高斯函数，和放电条件对高能离子特性的影响进行了研究。从阴极发出的离子的能量似乎随着放电电流的增加或阴极放电速率的降低而增加。更高的放电电流导致的分布中的高能量尾部的离子布居数增加的羽流模式，而高能量尾部减少的斑点模式。
Energy distributions of ions emanating from high-current, xenon hollow cathodes were measured using an electrostatic energy analyzer. Ions with energies much greater thanmaximumpotential differences between electrodes were observed. This result is consistent with previous retarding-potential-analyzer data, but the electrostaticenergy-analyzer data show much more complicated structures. To characterize these distributions, they were t with simple Gaussian functions, and the effects of discharge conditions on high-energy-ion characteristics were investigated. The energy of ions emanating from cathodes appears to increase as discharge current is increased or cathode ow rate is reduced. Higher discharge currents cause the ion populations in the high-energy tails of the distributions to increase in the plume mode while the high-energy tails decrease in the spot mode.