| ^129Xe^30＋入射Au靶表面的X射线辐射 |
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| 引用本文： | 张小安,肖国青,赵永涛,杨治虎,陈熙萌,李福利.^129Xe^30＋入射Au靶表面的X射线辐射[J].中国科学:物理学 力学 天文学,2012(1):42-46. |
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| 作者姓名： | 张小安 肖国青 赵永涛 杨治虎 陈熙萌 李福利 |
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| 作者单位： | [1]咸阳师范学院与中国科学院近代物理研究所联合共建-离子束与光物理实验室,咸阳712000 [2]中国科学院近代物理研究所,兰州730000 [3]兰州大学核科学与技术学院,兰州730000 [4]西安交通大学应用物理系,西安710049 |
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| 基金项目： | 国家自然科学基金（批准号：11075135,11075192）; 陕西省自然科学基金（编号：2010JM1012）; 陕西省教育厅科研计划（编号：2010JK895）资助项目致谢感谢中国科学院兰州重离子加速器国家实验室ECR源技术人员勤奋地工作,为该项目实验提供高品质束流. |
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| 摘 要： | 当不同动能（350-600keV）高电荷态离子129Xe30＋入射Au表面过程中,发出了1.65keV的X射线和靶原子的Mα特征X射线.分析表明：高电荷态离子与Au表面相互作用过程中,Xe离子3d壳层的电子被激发,形成空穴,4f电子偶极跃迁辐射1.65keVM-X射线.同时,靶原子Au的3s电子被激发,退激辐射M-X射线.利用经典过垒模型解释了Xe的M-X射的产额随入射离子的动能增加而减小,靶原子的特征X射线产额随入射离子的动能增加而增加的原因.
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| 关 键 词： | 高电荷态离子 激发 空穴 产额 |
X ray spectra induced by ^129Xe^30＋ impacting the Au surface |
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| ZHANG XiaoAn,＊,XIAO GuoQing,ZHAO YongTao,YANG ZhiHu,CHEN XiMeng,＆LI FuLi.X ray spectra induced by ^129Xe^30＋ impacting the Au surface[J].Scientia Sinica Pysica,Mechanica & Astronomica,2012(1):42-46. |
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| Authors: | ZHANG XiaoAn ＊ XIAO GuoQing ZHAO YongTao YANG ZhiHu CHEN XiMeng ＆LI FuLi |
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| Institution: | 1 Ion beam＆Optical Physical joint Laboratory of Xianyang Normal University and Institute of Modern Physics,Chinese Academy of Sciences,Xianyang 712000,China;2 Institute of Modern Physics,Chinese Academy of Science,Lanzhou 730000,China;3 School of Nuclear Science and Technology,Lanzhou University,Lanzhou 730000,China;4 Department of Applied Physics,Xi＇an Jiaotong University,Xi＇an 710049,China |
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| Abstract: | X ray emission from Xe30＋ions（kinetic energy 350-600 keV）impacting on an Au target surface was investigated.The 1.65 keV M-X ray and the Au atomic Mα characteristic X rays were measured.The results show that because the 3d electron of the Xe ion is excited to occur a vacancy,the 1.65 keV M-X ray are emit from the electron transition between 4f to 3d energy level.The 3s electron of the Au target atom is ionized to form a hole in the M-shell,the Mα characteristic X rays are radiated by 4f electron filling in the hole.It was also found that the yield of such characteristic X rays is decreasing with increasing the projectile kinetic energy.The yield of the characteristic Au X rays increases with increasing the projectile kinetic energy.These phenomena are analyzed with the classical coulomb over the barrier mode. |
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| Keywords: | highly charged ion excitation vacancy yield |
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