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高电荷态离子入射Al表面库仑势对靶原子特征谱线强度的影响
引用本文:王立,张小安,杨治虎,陈熙萌,张红强,崔莹,绍剑雄,徐徐. 高电荷态离子入射Al表面库仑势对靶原子特征谱线强度的影响[J]. 物理学报, 2008, 57(1): 137-142
作者姓名:王立  张小安  杨治虎  陈熙萌  张红强  崔莹  绍剑雄  徐徐
作者单位:(1)兰州大学物理系,兰州 730000; (2)中国科学院近代物理研究所,兰州 730000; (3)中国科学院近代物理研究所,兰州 730000;咸阳师范学院物理系,咸阳 712000
基金项目:国家自然科学基金(批准号:10574132),陕西省教育厅专项基金(批准号:04JK300),咸阳师范学院科研基金(批准号:05XSYK103)资助的课题.
摘    要:用同一动能(150keV)而不同电荷态的40Arq+(8≤q≤16)离子入射金属Al表面,靶原子受激辐射产生特征光谱线. 实验结果表明:高电荷态离子与金属表面相互作用过程中,经过与靶原子碰撞(Penning碰撞)交换动能和共振电子俘获(resonant capture)释放库仑势能,将携带的能量沉积于靶表面,使靶原子激发. 这种激发不同于光激发,它不仅激发了原子复杂电子组态之间的跃迁,而且跃迁辐射的特征谱线强度增强的趋势与入射粒子的库关键词:高电荷态离子库仑势特征光谱光谱强度

关 键 词:高电荷态离子  库仑势  特征光谱  光谱强度
文章编号:1000-3290-(2008)01-0137-06
收稿时间:2007-01-30
修稿时间:2007-04-23

The coulomb potential energy effect on the intensity of the characteristic lines at highly charged ion incendence on Al surface
Wang Li,Zhang Xiao-An,Yang Zhi-Hu,Chen Xi-Meng,Zhang Hong-Qiang,Cui Ying,Shao Jian-Xiong,Xu Xu. The coulomb potential energy effect on the intensity of the characteristic lines at highly charged ion incendence on Al surface[J]. Acta Physica Sinica, 2008, 57(1): 137-142
Authors:Wang Li  Zhang Xiao-An  Yang Zhi-Hu  Chen Xi-Meng  Zhang Hong-Qiang  Cui Ying  Shao Jian-Xiong  Xu Xu
Abstract:The Al atomic characteristic spectral lines were induced by the impact of 40Arq+ ions (8≤q≤16; kinetic energy 150keV) on Al surface. The result shows that by Penning impinging and resonant capture, the ion energy is deposited on the Al surface to excite the target atom, which is different from light excitation. Not only are the transitions betweem electronic configurations of the atomic complex excited, but the enhancing tendency of the characteristic spectral line intensity is consistent with the enhancing tendency of the coulomb potential energy of the incident ions with increasing charged states.
Keywords:highly charged ion   coulomb potential energy   characteristic lines   spectra intensity
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