Energy loss and electron and x-ray emission of slow highly charged Arq+ ions in grazing incidence on an Al(111) surface

Energy loss and electron and x-ray emission of slow highly charged Arq+ ions in grazing incidence on an Al(111) surface
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Al(111) 表面掠入射时慢速高电荷 Arq 离子的能量损失以及电子和 X 射线发射

DOI:
10.1103/physreva.81.052902
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发表时间:
2010-05
期刊:
PHYSICAL REVIEW A 81, 052902 (2010)
影响因子:
--
通讯作者:
Xiangwen Luo
Xiangwen Luo
中科院分区:
其他
文献类型:
--
作者:
Xiangwen Luo

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在经典过势垒模型的框架下,研究了高电荷态慢离子Ar{sup q+}在不同方位角下掠Al(111)单晶表面的能量损失、电子发射和X射线发射.观察到Ar{sup 17+}离子沿沿着低折射率晶体学方向掠射的能量损失、潜在电子发射产额、KL{sup 1}伴线强度或X射线产额的增强。计算得到的Ar{sup 0}与金属表面相互作用的能量损失谱与实验结果符合得相当好。通过分析不同方位角下反射离子的最终电荷态分布、潜在电子发射产额和X射线产额,讨论了通过侧馈机制、俄歇跃迁和辐射衰减过程的内壳层填充贡献。
Within the framework of the classical over-barrier model, energy loss, electron emission, and x-ray emission of slow highly charged ion Ar{sup q+} grazing on the Al(111) single-crystal surface under various azimuthal angles have been studied. The enhancement of energy loss, potential electron emission yields, intensity of KL{sup 1} satellite lines, or x-ray yields for the Ar{sup 17+} ion grazing along low-index crystallographic directions was observed. The calculated energy-loss spectra of atomic projectiles Ar{sup 0} interacting with metallic surface agree reasonably well with experiment. The inner-shell filling contributions through the side feeding mechanism, Auger transitions, and the radiative decay process are discussed by analyzing the final charge-state distributions of the reflected ions, potential electron emission yields, and x-ray yields under different azimuthal angles.
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