Ar的类氦和类锂离子与Mo表面相互作用过程中的x射线发射  

X-ray emission in lithium-like and helium-like argon ions colliding with molybdenum surfaces

作　　者：张艳萍[1] 杨治虎[1] 杜树斌[2] 陈熙萌[3] 赵永涛[1] 张小安[1] 崔莹[3] 张红强[3] 徐徐[3] 邵健雄[3] 肖国青[1] 

机构地区：[1]中国科学院近代物理研究所 [2]中国原子能科学研究院,北京102413 [3]兰州大学现代物理系,兰州730000

出　　处：《物理学报》2005年第8期3559-3564,共6页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:10274088;10173028);国家重点基础研究专项基金(批准号:2002CCA00900)资助的课题.~~

摘　　要：在兰州重离子加速器国家实验室电子回旋共振离子源上用Si(Li)探测器观测到了不同动能的Ar15+和Ar16+离子与Mo表面相互作用过程产生的x射线.在不同动能的Ar16+与Mo表面作用过程中不仅能观测到Ar的K层x射线而且能观测到Mo的L层x射线.在不同动能的Ar15+入射下只能观测到Mo的L层x射线.实验结果表明,Ar的K层x射线的产额与入射离子的动能、作用过程中形成的空心原子携带的势能以及入射离子和靶原子x射线的竞争等有关,Mo的L层x射线随入射离子动能的增加而增加.We have measured the spectra and yields for Ar K and Mo L x-rays from Ar15+ and Ar16+ ions colliding with molybdenum (Mo) surfaces. The spectra and yields are measured as a function of the projectile kinetic energy. In the case of Ar16+ -Mo, both Ar K x-rays and Mo L x-rays are observed, and the yields of Ar K x-rays are related to the projectile kinetic energy, the potential energy of hollow atom formed in the interaction, the competition of the x-rays emitting from the projectile and the target etc. But in the case of Ar15+ -Mo, Mo L x-rays are observed only. The yields of Mo L x-rays induced in both cases increase with the projectile kinetic energy.

关 键 词：作用过程 表面相 x射线发射 MO 类锂离子 AR 电子回旋共振离子源 兰州重离子加速器 类氦 入射离子 国家实验室 空心原子 动能 观测 探测器 靶原子 势能 

分 类 号：O562.5[理学—原子与分子物理]