| 透射式GaAs（Cs,O）光电阴极稳定性的研究 |
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| 引用本文： | 闫金良,向世明.透射式GaAs（Cs,O）光电阴极稳定性的研究[J].红外与毫米波学报,2001,20(2):157-160. |
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| 作者姓名： | 闫金良 向世明 |
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| 作者单位： | 1. 西安交通大学电信学院电子工程系,
2. 西安应用光学研究所, |
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| 基金项目： | 国防科技重点基金! ( 2 .2 .3 .1)，中国博士后科学基金! (中博基
[1999] 17号 )资助项目&& |
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| 摘 要： | 研究了光照强度和残余气体对阴极稳定性的影响，比较阴极在管壳内和激活室内的阴极稳定性，用俄歇谱仪分析激活的GaAs光电阴极表面和灵敏度衰减到O时的GaAs光电阴极表面。结果表明，真空中有害残余气体与阴极表面的相互作用是引起阴极衰减的主要原因。
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| 关 键 词： | 负电子亲和势 残余气体 稳定性 光电阴极 微光像增强器 CaAs（Cs O） 光照强度 俄歇谱仪 |
| 修稿时间： | 2000年5月30日 |
STABILITY OF TRANSMISSION MODE GaAs(Cs,O) PHOTOCATHODES |
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| YAN Jin Liang,ZHU Chang,Chun.STABILITY OF TRANSMISSION MODE GaAs(Cs,O) PHOTOCATHODES[J].Journal of Infrared and Millimeter Waves,2001,20(2):157-160. |
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| Authors: | YAN Jin Liang ZHU Chang Chun |
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| Abstract: | The influence of illumination intensity and residual gases on the stability of negative electron affinity GaAs(Cs,O) photocathodes during operation was investigated in the present work. A comparison was made between the stability of photocathodes installed in activation chamber and tube body. Studies of the activated GaAs photocathode surface and the surface of GaAs photocathode with sensitivity decaying to zero were made using Auger electron spectroscopy. It was found that the degradation of GaAs photocathodes stems maingly from the interaction of harmful residual gases and photocathode surface. |
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| Keywords: | photoemission image intensifier negative electron affinity residual gas stability |
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