BISOL激光共振电离离子源的研制  

Development of Resonance Ionization Laser Ion Source for BISOL

作　　者：唐兵[1] 崔保群[1] 陈立华[1] 马燮 王云峰 马瑞刚[1] 马鹰俊[1] 张一帆 黄青华[1] 于荣凯 燕冲 TANG Bing;CUI Baoqun;CHEN Lihua;MA Xie;WANG Yunfeng;MA Ruigang;MA Yingjun;ZHANG Yifan;HUANG Qinghua;YU Rongkai;YAN Chong(Department of Nuclear Physics,China Institute of Atomic Energy,Beijing 102413,China)

机构地区：[1]中国原子能科学研究院核物理研究所,北京102413

出　　处：《原子能科学技术》2021年第S01期165-170,共6页Atomic Energy Science and Technology

基　　金：国家自然科学基金资助项目(11475270);中核集团公司集中研发项目资助(FA18000201);中核集团公司领创科研项目资助。

摘　　要：堆内离子源是北京在线同位素分离丰中子束流装置(BISOL)的主要技术难点之一。为突破堆内离子源关键技术,研制了一台激光共振电离离子源。该离子源源芯为1台电子束碰撞等离子体离子源,通过向离子源内同时馈入三束激光,实现不同核素的激光分步共振电离。激光系统由3台可调谐钛宝石全固态激光器组成,每台钛宝石激光器各自由一台最大功率为20 W的Nd:YAG激光器泵浦。通过向离子源馈入波长分别为286.415、811.630、823.704 nm的三束激光,实现了锡的三步激光共振电离,最大束流强度可达到10 nA。A resonance ionization laser ion source was developed for the key technology research of the radioactive ion source in reactor tube for BISOL(Beijing neutron rich isotope separator on line facility).The ion source was based on a FEBIAD(forced electron beam induced arc discharge)ion source with three all-solid-state tunable Ti:Sapphire lasers.Each Ti:Sapphire laser was pumped by a Nd:YAG laser with the maximum power of 20 W individually.Sn+ion beam was produced by the three-step resonance ionization scheme ofλ1=286.415 nm,λ2=811.630 nm andλ3=823.704 nm.The maximum current of Sn+is 10 nA.

关 键 词：激光共振电离离子源 分步共振电离 放射性核束 

分 类 号：TL503.4[核科学技术—核技术及应用]