新型注铯镁金属光阴极的实验研究  

EXPERIMENTAL STUDY OF NEW-TYPE Cs^+ ION-IMPLANTED Mg PHOTOCATHODE 

作　　者：唐渝兴[1] 赵坤[1] 郝建奎[1] 王莉芳[1] 全胜文[1] 杨希[1] 张云驰[1] 张保澄[1] 赵夔[1] 

机构地区：[1]北京大学重离子所超导腔组,北京100871

出　　处：《物理学报》2000年第5期1002-1005,共4页Acta Physica Sinica

基　　金：国家自然科学基金!(批准号 :693 810 0 5;1973 5 0 0 4) )资助的课题 &&

摘　　要：报道了用于激光驱动高亮度注入器的新型光阴极的实验研究 .用铯离子注入的方法得到了在镁基底上的掺铯合金光阴极 ,研究了注入、溅射及光电发射的机制和参数 .用此阴极得到了比纯金属镁阴极高约一个量级的量子效率和绿光下的单光子发射效应 。The development of a new\|type photocathode for laser\|driven high\|brightness e\|beam injector was reported.By the use of Cs\++ ion implantation,a Mg\|Cs alloy photocathode on Mg substrate was made.Some parameters of the ion implantation,the sputtering process,the photoemission and its mechanism were studied.Compared with the pure Mg photocathode,an order of magnitude improvement in the quantum efficiency from this photocathode has been obtained,meanwhile,we have also obtained a single\|photon electron emission under the driving of 532nm green laser,the latter is a new development for the first time so far as we know in the world.Our experimental results provided a new way for the technology of high current,ultra short pulse e\|beam.

关 键 词：新型注铯镁金属光阴极 实验 加速器 电子枪 

分 类 号：TN104.1[电子电信—物理电子学]