| 相对论小分量波函数对原子光电离截面的影响 |
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| 引用本文： | 刘晓斌,邢永忠,孙小伟.相对论小分量波函数对原子光电离截面的影响[J].原子核物理评论,2008,25(1):82-86. |
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| 作者姓名： | 刘晓斌 邢永忠 孙小伟 |
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| 作者单位： | 1天水师范学院物理与信息科学学院, 甘肃 天水741001; 2兰州交通大学数理学院, 甘肃 兰州730070 |
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| 基金项目： | 国家自然科学基金
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甘肃省自然科学基金 |
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| 摘 要： | 利用相对论平均自洽场理论， 研究了相对论波函数的小分量对原子光电离截面的影响。原子核尺寸效应将使波函数小分量对原子光电离截面的影响减弱。由于波函数沿径向空间被压缩， 电子离核的平均半径较小， 波函数小分量对高离化态离子光电离截面的影响比对一般原子要强得多。波函数小分量反映了相对论效应的基本特征， 从而也定性地说明了光电离过程中相对论效应的强弱。The effects of relativistic small radial component on atomic photoionization cross sections have been studied within relativistic average self consistent field theory. Relativistic effects are relatively unimportant for low photon energy, along with a review of high energy photoionization the relativistic effects are quite important. The effects of relativistic small radial component on photoionization process should show breakdown when the nuclear finite size effects is taken into account. The compression of wavefunction into the space near nucleus is so strong in highly charged ions that the electronic radius greatly decreases, and the effects of relativistic small radial component on photoionization cross sections turn to stronger than ordinary atoms. Since relativistic effects are extremely sensitive to the behavior of small radial component, the results are in good agreement with relativistic effects on photoionization cross section.
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| 关 键 词： | 光电离 截面 相对论效应 波函数小分量 |
| 文章编号： | 1007-4627(2008)01-0082-05 |
| 收稿时间： | 1900-01-01 |
| 修稿时间： | 2007年6月15日 |
Effects of Relativistic Small Radial Component on Atomic Photoionization Cross sections |
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| LIU Xiao-bin,XING Yong-zhong,SUN Xiao-wei.Effects of Relativistic Small Radial Component on Atomic Photoionization Cross sections[J].Nuclear Physics Review,2008,25(1):82-86. |
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| Authors: | LIU Xiao-bin XING Yong-zhong SUN Xiao-wei |
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| Institution: | 1 School of Physics and Information Science, Tianshui Normal University, Tianshui741000, Gansu, China;2 School of Mathematics and Physics, Lanzhou Jiaotong University, Lanzhou730070, China |
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| Abstract: | The effects of relativistic small radial component on atomic photoionization cross sections have been studied within relativistic average self consistent field theory. Relativistic effects are relatively unimportant for low photon energy, along with a review of high energy photoionization the relativistic effects are quite important. The effects of relativistic small radial component on photoionization process should show breakdown when the nuclear finite size effects is taken into account. The compression of wavefunction into the space near nucleus is so strong in highly charged ions that the electronic radius greatly decreases, and the effects of relativistic small radial component on photoionization cross sections turn to stronger than ordinary atoms. Since relativistic effects are extremely sensitive to the behavior of small radial component, the results are in good agreement with relativistic effects on photoionization cross section. |
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