【摘要】 对ＧａＡｓ光电阴极激活过程中各阶段做了Ｘ射线光电子谱（ＸＰＳ）表面分析，根据ＸＰＳ分析所得数据，改进了激活工艺，提出了获得更好发射性能的光电阴极的最佳Ｃｓ和Ｏ２量，并提出了Ｃｓ和Ｏ２在ＧａＡｓ表面排列的模型．更多还原

【Abstract】 The GaAs photocathode surface has been studied by XPS in every stage of activation. Basing on the XPS data, we have improved the activation technology, suggested the optimum amount of Cs and O2 for photocathodes of better emmission properties, and proposed a model of Cs and O2 arrangement on the GaAs surface.更多还原