Fully differential single-photon double photoionization of atomic magnesium
Fully differential single-photon double photoionization of atomic magnesium
复制标题
原子镁的全差分单光子双光电离
DOI：
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
C. W. McCurdy
中科院分区：
文献类型：
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作者：
F. L. Yip;T. Rescigno;C. W. McCurdy
作者：Yip, FL；田纳西州雷西尼奥；麦柯迪，CW |摘要：© 2016 美国物理学会。在存在剩余 10 个电子的完全占据的冻结核心配置的情况下，使用 3s2 电子配置的基于网格的表示来计算原子镁的价壳双电离。原子轨道是根据底层有限元离散变量表示构建的，有助于准确表示内层电子与进入连续体的电子之间的相互作用。将长度和速度计的结果与最近的理论计算和总双微分、单微分和三微分横截面的实验测量进行了比较，特别是最后一个的光子能量为 55.49 eV。 ns2原子氦、铍和镁的相似双电离过程之间的比较进一步阐明了价壳层电子关联在具有类氦电子构型和对称性的原子靶中的作用。
Author(s): Yip, FL; Rescigno, TN; McCurdy, CW | Abstract: © 2016 American Physical Society. The valence-shell double ionization of atomic magnesium is calculated using a grid-based representation of the 3s2 electron configuration in the presence of a fully occupied frozen-core configuration of the remaining ten electrons. Atomic orbitals are constructed from an underlying finite-element discrete variable representation that facilitates accurate representation of the interaction between the inner-shell electrons with those entering the continuum. Length and velocity gauge results are compared with recent theoretical calculations and experimental measurements for the total double-, single-, and triple-differential cross sections, particularly at the photon energy of 55.49 eV for the last one. Comparison between the similar processes of double ionization of the ns2 atoms helium, beryllium, and magnesium further illuminates the role of valence-shell electron correlation in atomic targets with heliumlike electronic configurations and symmetry.