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中文摘要：
在分析双洞相关退激发对双洞态退激发的贡献较小的基础上，依据辐射-俄歇-双俄歇级联退激发模型（RACDA）研究了Mg^1＋（1s^-1）（K壳层单洞态镁离子）和Mg^2＋（1s^-2）（K壳层双洞态镁离子）的退激发过程，计算了它们的末电离态离子的分布，并与辐射-俄歇级联退激发模型的结果进行了比较．RACDA模型计算的Mg^1＋（1s^-1）的4价末电离态离子的相对丰度较大，而辐射-俄歇级联退激发模型（RAC）的结果中就没有出现4价离子；两种模型计算Mg^2＋（1s^-2）的6价末电离态离子的丰度非常大．而RAC模型下的Mg^2＋（1s^-2）退激发后不产年6价离子．
英文摘要：
Based on the conclusion that the contribution of correlated decay of two vacancies in atoms is small, the de-excitation process of Mg^1＋ （ls^-1） hollow magnesium ions with single K-vacancy and Mg^2＋ （ls^-2） double K-vacancy were treated by applying the radiative-single Auger - double Auger cascade model（RACDA）. The final-charge-state distribution（FCSD） of these hollow ions were calculated, and compared with that obtained with the radiative-single Auger cascade model（RAC）. The probability of tetravalent ion production via the de-excitation of Mg^1＋ （1 s^-1 ） obtained by RACDA model is considerable, but tetravalent ion is not produced in the by RAC model. The probability of hexavalent ion production via the de-excitation of Mg^2＋ （ 1 s^- 2 ） obtained by RACDA model is very large, but hexavalent ion is not produced in the RAC model.
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