近Bohr速度129Xeq+离子入射Ta靶发射近红外光谱线
Atomic and ionic near infrared emission spectra induced by the impact of 129Xeq+on Ta solid surface
王益军 1张颖 1张小安 2周贤明 1梅策香 1梁昌慧 1曾利霞 1李耀宗 1柳钰 1向前兰 1孟惠 1张艳宁1
作者信息
- 1. 咸阳师范学院离子束与光物理实验室,咸阳 712000
- 2. 咸阳师范学院离子束与光物理实验室,咸阳 712000;中国科学院近代物理研究所,兰州 730000
- 折叠
摘要
用动能一定的高电荷态129Xeq+(17≤q≤27)离子,分别入射洁净的Ta靶表面,测量中性化的激发态Xe原子从组态5p5(2P°3/2)nl退激到组态5p5(2P°3/2)ml'过程中辐射的近红外光谱线.实验结果表明:多激发态的空心原子退激发射其特征光谱线,部分典型的跃迁按照阶梯方式退激.Xe原子发射的谱线的单粒子荧光产额和激发的Ta原子发射谱线的单粒子荧光产额随入射离子电荷态的增加而增加,其增加的趋势与入射离子携带的势能随电荷态增加的趋势一致.证明在近Bohr速度的能区,经典过垒模型是成立的.
Abstract
The highly charged 129Xeq+(17≤q≤27)ions with certain kinetic energy are incident on the clean Ta target surface respectively,then the measurement of near-infrared spectral lines emitted from Xe hollow atoms and Ta atoms is reported.The experimental results show that in the de-excited emission characteristic spectral lines of hollow atoms in multi-excited states,some typical transitions follow the ladder pattern,the single-particle fluorescence yield of the spectral lines emitted by Xe atoms and the single-particle fluorescence yield of the spectral lines emitted by excited Ta atoms increase with the increase of the charge state of the incident ions,and the increasing trend is consistent with the trend of the potential energy carried by the incident ions with the increase of the charge state.It is proved that in the energy region near Bohr velocity,the classical over-the-barrier model is valid.
关键词
玻尔速度/高电荷态离子/经典过垒模型/近红外光谱线/空心原子Key words
Bohr velocity/Highly charged ion/Classical over-the-barrier model/Near-infrared spectral lines/Hollow atom引用本文复制引用
基金项目
国家自然科学基金项目(12175174)
国家自然科学基金项目(12205247)
陕西省自然科学基础研究计划(2020JM-624)
陕西省自然科学基础研究计划(2023-JC-YB-032)
陕西省自然科学基础研究计划(2023-JC-QN-00080)
陕西省数理基础科学研究项目(22JSQ040)
陕西省教育厅科研计划项目(22JK0604)
咸阳师范学院教改项目(2021Y012)
出版年
2024
国家科技期刊平台
NSTL
维普
万方数据