Changchun Institute of Optics,Fine Mechanics and Physics,CAS
Effect of Cs adsorption on the photoemission performance of GaAlAs photocathode | |
Chen X. L.; Jin M. C.; Zeng Y. G.; Hao G. H.; Zhang Y. J.; Chang B. K.; Shi F.; Cheng H. C. | |
2014 | |
发表期刊 | Applied Optics |
ISSN | ISBN/1559-128X |
卷号 | 53期号:32页码:7709-7715 |
摘要 | The effect of Cs adsorption on the photoemission performance of a reflection-mode GaAlAs photocathode in an ultrahigh vacuum chamber has been investigated. The experiments for Cs/O activation, multiple recaesiation, and degradation are performed on a GaAlAs photocathode. Meanwhile, the Cs/ O activated and recaesiated photocurrent curves, degraded photocurrent curves, and spectral response curves are measured and analyzed. Besides, the performance parameters of the photocathodes are obtained by using the formula to fit with the experimental quantum efficiency curves. The results show that the Cs atoms not only make the atomically clean surface form the negative electron affinity, but also make the degraded photocathode recover to a good level. The quantum efficiency and the lifetime of GaAlAs photocathode become lower with increasing the recaesiation times. (C) 2014 Optical Society of America |
收录类别 | SCI ; EI |
语种 | 英语 |
文献类型 | 期刊论文 |
条目标识符 | http://ir.ciomp.ac.cn/handle/181722/43922 |
专题 | 中科院长春光机所知识产出 |
推荐引用方式 GB/T 7714 | Chen X. L.,Jin M. C.,Zeng Y. G.,et al. Effect of Cs adsorption on the photoemission performance of GaAlAs photocathode[J]. Applied Optics,2014,53(32):7709-7715. |
APA | Chen X. L..,Jin M. C..,Zeng Y. G..,Hao G. H..,Zhang Y. J..,...&Cheng H. C..(2014).Effect of Cs adsorption on the photoemission performance of GaAlAs photocathode.Applied Optics,53(32),7709-7715. |
MLA | Chen X. L.,et al."Effect of Cs adsorption on the photoemission performance of GaAlAs photocathode".Applied Optics 53.32(2014):7709-7715. |
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