Ar^16＋和Ar^17＋离子与Zr作用产生的X射线谱  

X-ray spectra produced by interaction of Ar^(16+)and Ar^(17+) with Zr

作　　者：杨治虎[1] 宋张勇[1] 崔莹[2] 张红强[2] 阮芳芳[1] 邵健雄[2] 杜娟[2] 刘玉文[2] 朱可欣[1] 张小安[3] 邵曹杰[1] 卢荣春[1] 于得洋[1] 陈熙萌[2] 蔡晓红[1] 

机构地区：[1]中国科学院近代物理所,兰州730000 [2]兰州大学现代物理系,兰州730000 [3]咸阳师范学院物理系,咸阳712000

出　　处：《物理学报》2008年第2期803-807,共5页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:10274088,10375080,10574132)资助的课题.~~

摘　　要：将超导离子源提供的10—20keV/qAr16+和Ar17+离子入射到Zr金属表面,在相互作用中产生的X射线谱表明,高电荷态Ar16+离子在金属表面中性化过程中有可能存在多电子激发,使Ar16+的K壳层电子被激发形成空穴,在退激过程中发射特征Kα-X射线.空心原子Ar的K层发射X射线强度随入射离子的动能而减弱,靶原子Zr的L壳层发射X射线强度随入射离子动能的增加而增强.Ar17+的单离子的Kα-X射线产额比Ar16+单离子的Kα-X射线产额大5个数量级.The 10-20 qkeV Ar^16＋ and Ar^17＋ ions produced by SECRAL enter on metallic surface of Zr. In this interaction, the multielectron excitation possibly occurred in the neutralization of the highly charged Ar^16＋ ions, which produced vacancy in the K shell. Electron of the high n state de-excited to K vacancy gives off X-ray. The experimental results show that X-ray intensities for the Ar hollow atom decrease with increase of incidence energy, and Lβ X-ray intensities of target atom Zr increase with increasing incidence energy. Kα X-ray yield per ion for Ar^17＋ was five orders of magnitude greater than that for Ar^16＋.

关 键 词：高电荷态离子 空心原子 X射线 

分 类 号：O561[理学—原子与分子物理]