Time-of-Flight Separation of Secondary Electrons Due to Metastable He and HeI Photon Beams Produced by Pulsed Hot-Cathode Discharge
Time-of-Flight Separation of Secondary Electrons Due to Metastable He and HeI Photon Beams Produced by Pulsed Hot-Cathode Discharge
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脉冲热阴极放电产生的亚稳态 He 和 HeI 光子束导致二次电子的飞行时间分离
DOI：
10.1143/jjap.25.l501
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发表时间：
1986
期刊：
影响因子：
--
通讯作者：
T. Noda
中科院分区：
文献类型：
--
作者：
S. Nishigaki;M. Sugihara;M. Ohara;S. Fukui;K. Matsuo;T. Noda
用飞行时间技术测量了热阴极放电产生的He亚稳原子的速度分布。它与麦克斯韦在1400 K附近的速度分布相当。从靶Si（111）表面发射的二次电子呈现亚稳态原子去激发谱，而与放电脉冲同时发射的电子呈现光电子谱。描述了亚稳原子在表面退激的可能机制。
Velocity distribution of He metastable atoms produced by hot-cathode discharge has been measured by a time-of-flight technique. It is comparable to Maxwell's velocity distribution characterized by the temperature around 1400 K. Secondary electrons from a target Si(111) surface ejected late from discharge pulses presented metastable-atom deexcitation spectra, whereas electrons ejected in coincidence with discharge pulses showed photoelectron spectra. The possible mechanism of metastable-atom deexcitation at the surface is described.