多电荷离子电子复合中的宇称不守恒
Parity nonconservation in electron recombination of multiply charged ions
摘要：
讨论了极化电子在类氢离子与$Z \lesssim 60$的KLL双电子复合截面中宇称不守恒的不对称性。由于类氦离子中宇称相反的双激发$2l2l'$态的近简并性，这种效应被强烈地增强。对于具有$Z \sim 30$的离子，不对称性为$10^{-9}$的量级。对于$Z \approx 48$，发生能级交叉，导致$\pm 5\times 10^{-9}$的PNC不对称性，其比原子中的弱相互作用的基本强度大$10^8$倍。
英文摘要：
We discuss a parity nonconserving asymmetry in the cross section of KLL dielectronic recombination of polarized electrons on the hydrogen-like ions with $Z \lesssim 60$. This effect is strongly enhanced because of the near-degeneracy of doubly-excited $2l2l'$ states of opposite parity in He-like ions. For ions with $Z \sim 30$ the asymmetry is of the order of $10^{-9}$. For $Z \approx 48$ a level crossing takes place, leading to the PNC asymmetry of $\pm 5\times 10^{-9}$, which is $10^8$ times greater than the basic strength of the weak interaction in atoms.
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