摘要
用动能一定的高电荷态^(129)Xe^(q+)(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5p^(5)(^(2)P°_(3/2))nl退激到组态5p^(5)(^(2)P°_(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.
The highly charged^(129)Xe^(q+)(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.
作者
王益军
张颖
张小安
周贤明
梅策香
梁昌慧
曾利霞
李耀宗
柳钰
向前兰
孟惠
张艳宁
WANG Yi-Jun;ZHANG Ying;ZHANG Xiao-An;ZHOU Xian-Ming;MEI Ce-Xiang;LIANG Chang-Hui;ZENG Li-Xia;LI Yao-Zong;LIU Yu;XIANG Qian-Lan;MENG Hui;ZHANG Yan-Ning(Ion Beam and Optical Physical Joint Laboratory of Xianyang Normal University,Xianyang 712000,China;Institute of Modern Physics,Chinese Academy of Sciences,Lanzhou 730000,China)
出处
《原子与分子物理学报》
北大核心
2024年第6期84-91,共8页
Journal of Atomic and Molecular Physics
基金
国家自然科学基金项目(12175174,12205247)
陕西省自然科学基础研究计划(2020JM-624,2023-JC-YB-032,2023-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)。
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
Bohr velocity
Highly charged ion
Classical over-the-barrier model
Near-infrared spectral lines
Hollow atom
