| 强扰动区C~(q+)离子与He原子碰撞中有效电荷研究 |
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| 引用本文： | 王诗尧.强扰动区C~(q+)离子与He原子碰撞中有效电荷研究[J].原子与分子物理学报,2015,32(1):96-101. |
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| 作者姓名： | 王诗尧 |
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| 作者单位： | 兰州大学核科学与技术学院 |
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| 摘 要： | 本文利用经典过垒电离模型(Class Over Barrier Ionization)处理100-400ke V/amu强扰动区(q/v1)的不同价态非全裸离子Cq+(q=1-4)与全裸离子H1+,He2+,Li3+与He原子碰撞过程.发现相同价态下,全裸离子的双单电离截面比R21明显低于非全裸离子,原因在于两者的电子结构明显不同.非全裸离子的外壳层电子在碰撞过程中会有一定几率过垒,这在以往的研究中并未考虑.利用模型计算结果与实验数据的比对,估计入射离子第二有效电荷,最终确定入射离子在电离过程中的第一和第二有效电荷.
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| 关 键 词： | 非全裸离子C，双单电离截面比R21，有效电荷 |
Effective charge of partially stripped carbon ions in helium double ionization at hundreds keV/u energies* |
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| wangshiyao.Effective charge of partially stripped carbon ions in helium double ionization at hundreds keV/u energies*[J].Journal of Atomic and Molecular Physics,2015,32(1):96-101. |
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| Authors: | wangshiyao |
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| Abstract: | The double to single ionization cross ratioand effective charge are investigated for 100-400 keV/amu Cq+ + He (q=1-4) collisions. It is found thatinduced by fully and partially stripped ions with same charge state have noticeable discrepancy. The reason lies in their different electronic structures. The effective charge of projectiles is assessed by using COBI model,the good fitting is obtained by comparing with the experimental data in the end. |
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| Keywords: | partially stripped carbon ion cross section ratio effective charge |
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