| C原子、离子光电离过程的规律研究 |
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| 引用本文： | 吴勇, 曾思良, 段斌, 等. C原子、离子光电离过程的规律研究[J]. 强激光与粒子束, 2006, 18(08). |
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| 作者姓名： | 吴勇 曾思良 段斌 王建国 张继彦 |
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| 作者单位： | 1.北京应用物理与计算数学研究所 计算物理重点实验室, 北京1 00088;;;2.中国科学院 兰州近代物理研究所, 兰州 730000;;;3.中国工程物理研究院 激光聚变研究中心, 四川 绵阳 621 900 |
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| 摘 要： | 基于Dirac-Slater自洽场方法，计算了C原子及各价离子从低能到高能的光电离截面。通过各种理论计算结果的比较，分析了Kramers公式的适用性。定量地考察了多极效应和相对论效应在不同能区对光电离截面的影响，并研究了光电离截面随光子能量、壳层、电离度变化的规律。
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| 关 键 词： | Dirac-Slater自洽场方法 光电离截面 多极计算 |
Relativistic multipole calculations on photoionization of cabon |
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| wu yong, zeng si-liang, duan bin, et al. Relativistic multipole calculations on photoionization of cabon[J]. High Power Laser and Particle Beams, 2006, 18. |
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| Authors: | wu yong zeng si-liang duan bin wang jian-guo zhang ji-yan |
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| Affiliation: | 1. Key Laboratory of Computational Physics,Institute of Applied Physics and Computational Mathematics,P.O.Box 8009-57,Beijing 100088,China;;;2. Institute of Modern Physics,Chinese Academy of Sciences,P.O.Box 31,Lanzhou 730000,China;;;3. Reseach Center of Laser Fusion,CAEP,P.O.Box 919-986,Mianyang 621900,China |
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| Abstract: | Based on the Dirac-Slater self-consistent-field method, the photoionization cross sections of electrons in 1s, 2s and 2p subshells of carbon atom with different degree of ionization (CI, CII, CIII, CIV, CV, CVI) are calculated from ionization threshold to 300 keV. In the calculation, the multipole and relativistic effects have been included. Variations of cross sections with the photon energy, ionization degree and subshells are investigated. The results are also compared with the data obtained from the Kramers formula with the Gaunt factor correction and the data of Verner et al. The validity of Kramers formula is discussed. |
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| Keywords: | dirac-slater self-consistent-field method photoionization multipole effect |
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