Abstract

The degree of linear polarization of the line x corresponding to the transition \(\mathrm {1s2p\,^3P_2\!\rightarrow \!1s^2\,^1S_0}\) is considered for Helium-like ions with non-zero nuclear spin. We are interested in this paper to seven ions: P\(^{13+}\), V\(^{21+}\), Mn\(^{23+}\), As\(^{31+}\), Rb\(^{35+}\), Y\(^{35+}\) and Nb\(^{39+}\) which are excited by electrons beam. In such ions, two kind of transitions occurs in the line x: the hyperfine-induced electric dipole E1 transition and the magnetic quadrupole M2 transition. From our results, we find that when we take into account this two kind of transitions without interference between the two channels E1 and M2, this leads to a drastic depolarization. However, the consideration of the interference effect leads to an increase in the polarization degree, slight for the whole line x and substantial for its individual hyperfine components.

Graphic Abstract

中文翻译：

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X 射线线发射中超精细诱导的去极化效应 $$\mathrm {1s2p\,^3P_2\!\rightarrow \!1s^2\,^1S_0}$$ 1 s 2 p 3 P 2 → 1 s 2 1类He离子的S 0

摘要

对应于跃迁\(\mathrm {1s2p\,^3P_2\!\rightarrow \!1s^2\,^1S_0}\)的线x的线性极化程度被考虑用于非零的类氦离子核自旋。我们对本文感兴趣的离子有七个：P \(^{13+}\) , V \(^{21+}\) , Mn \(^{23+}\) , As \(^{31+ }\) , Rb \(^{35+}\) , Y \(^{35+}\)和 Nb \(^{39+}\)被电子束激发。在这样的离子中，在x线中发生了两种跃迁：超精细诱导的电偶极子 E1 跃迁和磁四极子 M2 跃迁。从我们的结果中，我们发现当我们考虑到这两种过渡时，E1 和 M2 两个通道之间没有干扰，这会导致剧烈的去极化。然而，对干涉效应的考虑导致偏振度的增加，对于整个线x来说是轻微的，而对于其各个超精细分量来说是显着的。

图形摘要