Experimental Study on Photoemissive Thin Films With Ultrafine Particles  

作　　者：吴锦雷 刘惟敏 董引吾 石自光 赵兴钰 薛增泉 吴全德 庞世谨 

机构地区：[1]Department of Radio Electronics,Peking University,Beijing 100871,PRC [2]Beijing Laboratory of Vacuum Physics,Academia Sinica,P.O.Box 2724,Beijing 100080,PRC

出　　处：《Chinese Science Bulletin》1993年第15期1262-1264,共3页

摘　　要：There are two basic kinds of photoemissive materials for the laser pulse detection.One is the photoemissive thin films containing alkali elements,such as Ag-O-Cs,Cs₃Sb,[Cs]Na₂KSb.F.Gex et al.proposed that the Ag-O-Cs photocathode was the onlyphotoemissive material for detecting laser pulse with the duration≤10 ps and wavelength1.06μm.Another is pure metallic thin films,such as Au,Ag and Cu.The sensitivity ofphotocathodes containing alkali elements is higher than that of others,but this kind ofthin film cannot work at temperature higher than 150℃,nor can it be exposed to theatmosphere for the exposure will make it worthless.This causes the trouble for use。

关 键 词：PHOTOEMISSION THIN film ULTRAFINE PARTICLES laser PULSE 

分 类 号：N[自然科学总论]