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 Ga As光电阴极表面和灵敏度衰减到 0时的 Ga As光电阴极表面 .结果表明 。
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.
出处
《红外与毫米波学报》
SCIE
EI
CAS
CSCD
北大核心
2001年第2期157-160,共4页
Journal of Infrared and Millimeter Waves
基金
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&&
