^(129)Xe^(q+)激发Mo表面产生的X射线谱  

X-ray spectrum emitted by the impact of ^(129)Xe^(q+) on Mo surface

作　　者：梁昌慧[1] 张小安[2] 李耀宗[1] 赵永涛[2] 肖国青[2] 

机构地区：[1]咸阳师范学院物理系,咸阳712000 [2]中国科学院近代物理研究所,兰州730000

出　　处：《物理学报》2010年第9期6059-6063,共5页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:10574132);陕西省自然科学基金(批准号:2007A05;2010JM1012);咸阳师范学院科研基金(批准号:09XSYK106)资助的课题~~

摘　　要：研究了高电荷态离子129Xeq+(q=25,26,27)入射金属Mo表面产生的特征X射线谱.实验结果表明,在束流强度小于120nA条件下,高电荷态离子129Xeq+可以激发Mo的L壳层特征X射线谱.单离子X射线相对产额可达10-8量级,特征X射线的相对产额随入射离子的动能和电荷态(势能)的增加而增加.通过Mo原子的Lα1特征X射线谱,利用Heisenberg不确定关系对Mo原子的第M能级寿命进行了估算.We studied the characteristic X-ray spectra produced by the interaction of highly charged ions of 129 Xeq ＋ （q = 25,26, 27）with surface of metallic Mo. The experimental result shows that highly charged ions can excite the characteristic X-ray spectra of L-shell of Mo when the beam’s intensity is not more than 120 nA. The X-ray yield of single ion reaches a quantitative level of 10 -8 and increases with the increment of the ion’s kinetic energy and ionic charge （potential energy）. By measuring the X-ray spectra of Mo-Lα1 ,the M-level lifetime of Mo atom is estimated by using Heisenberg uncertainty relation.

关 键 词：高电荷态离子 X射线 产额 能级寿命 

分 类 号：O562.3[理学—原子与分子物理]