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| Na原子及类Na离子Fe15+价壳层光电离过程的理论研究 | |
| 引用本文： | 刘晓斌,师应龙,邢永忠,路飞平,陈展斌. Na原子及类Na离子Fe15+价壳层光电离过程的理论研究[J]. 光子学报, 2016, 0(12): 116-120. DOI: 10.3788/gzxb20164512.1202001 |
| 作者姓名： | 刘晓斌 师应龙 邢永忠 路飞平 陈展斌 |
| 作者单位： | 1. 天水师范学院物理系,甘肃天水,741001;2. 国防科学技术大学理学院,长沙,410073 |
| 基金项目： | 11504421)，the Natural Science Foundation of Gansu Province(1506RJZE112)，the Scientific Research Foundation of Higher Education of Gansu Province(2014A-104)，the Higher School in Gansu Province Basic Scientific Research Expenses(2050205) |
| 摘 要： | 采用相对论多组态Dirac-Fock理论,计算了Na原子及类Na离子Fe15++基态的光电离截面.对Na原子,考虑相对论效应与弛豫效应,本文计算结果与前人计算结果和实验测量结果一致性较好.对Fe15+离子的最外价电子,相对论效应对其光电离过程产生主要影响,而轨道弛豫效应则可忽略不计;对中性Na原子则情况完全不同:轨道弛豫效应的影响非常显著,但其光电离截面对相对论效应仅有非常微弱的依赖. |
| 关 键 词： | 原子光学 光电离 截面 Cooper极小 相对论效应 弛豫效应 |
Theoretical Study on the Valence-shell Photoionization of Na Atoms and Na-like Fe15+ Ions |
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| Abstract: | Calculations of photoionization cross sections for Na atoms and Na-like Fe15+ ions were carried out in the framework of relativistic multiconfiguration Dirac-Fock method.For Na atoms,comparisons were made with previous theoretical calculations and available experimental measurements and a good or at least reasonable agreement is found if the relativistic and relaxation effects are taken into account.It is shown that,for the outermost valence electrons of medium Fe15+ ions,the relativistic effects accounts for a prominent part in the photoionization process and orbital relaxation can be negligible;however it is not the same case for neutral Na atoms where the influence of orbital relaxations is significant but cross sections slightly depend on the relativistic effects. |
| Keywords: | Atom optics Photoionization Cross section Cooper-minimum Relativistic effect Relaxation effect |
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