| Xe54+离子与Xe原子碰撞过程中的辐射电子俘获及退激发辐射的理论研究 |
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| 引用本文： | 梁腾,马堃,陈曦,颉录有,董晨钟,邵曹杰,于得洋,蔡晓红.Xe54+离子与Xe原子碰撞过程中的辐射电子俘获及退激发辐射的理论研究[J].物理学报,2015,64(15):153401-153401. |
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| 作者姓名： | 梁腾 马堃 陈曦 颉录有 董晨钟 邵曹杰 于得洋 蔡晓红 |
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| 作者单位： | 1. 甘肃省原子分子物理与功能材料重点实验室, 西北师范大学物理与电子工程学院, 兰州 730070;
2. 中国科学院近代物理研究所, 兰州 730000 |
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| 基金项目： | 国家自然科学基金(批准号: 11274254, U1332206, U1331122)资助的课题. |
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| 摘 要： | 基于多组态Dirac-Fock理论方法和冲量近似, 对Xe54+与Xe在197 MeV/u碰撞能量下, 炮弹离子的俘获及退激发过程进行了理论研究. 计算了炮弹离子从中性靶原子俘获一个电子到nl (n=1, 2, 3, 4, 5; l=s, p, d) 轨道上的辐射电子俘获截面和相应的辐射光子能量, 以及俘获末态退激发辐射跃迁的能量和概率. 结合这些计算结果, 进一步模拟了碰撞产生的炮弹离子的退激发X射线谱的结构, 并与兰州重离子加速器装置上的最新实验观测结果进行了比较, 符合得很好.
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| 关 键 词： | 原子碰撞 辐射电子俘获 辐射退激发 |
| 收稿时间： | 2015-01-22 |
Theoretical study on radiative electron capture and subsequent radiative decay in collision of Xe54+ with Xe |
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| Liang Teng,Ma Kun,Chen Xi,Xie Lu-You,Dong Chen-Zhong,Shao Cao-Jie,Yu De-Yang,Cai Xiao-Hong.Theoretical study on radiative electron capture and subsequent radiative decay in collision of Xe54+ with Xe[J].Acta Physica Sinica,2015,64(15):153401-153401. |
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| Authors: | Liang Teng Ma Kun Chen Xi Xie Lu-You Dong Chen-Zhong Shao Cao-Jie Yu De-Yang Cai Xiao-Hong |
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| Institution: | 1. Key Laboratory of Atomic and Molecular Physics & Functional Materials of Gansu Province, College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, China;
2. Institute of Modern Physics, Chinese Academy of Science, Lanzhou 730000, China |
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| Abstract: | Based on the multiconfiguration Dirac-Fock method and impulse approximation, the electron capture and following radiation decay of the projectile ion are studied theoretically for Xe atom which is bombarded by Xe54+ ion at 197 MeV/u. The radiative electron capture (REC) cross-sections and the corresponding emitted photon energies have been calculated in detail. Meanwhile, the probabilities of the radiative decay and energies of the REC final states are also calculated; combined with the calculated results in this paper, the X-ray spectra structure of radiative decay from projectile ion is further simulated. It is found that the simulated spectra are in good agreement with the newly measured results at Lanzhou Heavy-Ion Accelerator Device. |
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| Keywords: | atom collision radiative electron capture radiative decay |
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