摘要
分析了X射线光电效应的特点，讨论了俄歇电子和二次电子的产生机制。在原有的对软X射线具有较高光电发射量子效率的基础上，我们通过改变材料的配比，研究并优化了一种理想的复合光阴极，它对能量在30～50KeV的硬X射线的量子效率最高可达到1。5电子/光子。
The mechanism of photo Auger electrons and the secon dary electron yield is discussed.Based on the known photocathode materials that have high quantum yield to soft X rays,the new photocahodes have developed and optimized that we mixture some of these materials through changing their quantit y ratio.The quantum efficiency of the multiple photocathode were measured 1.5 el ectrons per incident photon at maximum in the range 30～50～keV.
出处
《光子学报》
EI
CAS
CSCD
北大核心
2001年第9期1135-1137,共3页
Acta Photonica Sinica
