原子实极化效应对ScⅡ离子3d^2三重态超精细相互作用的影响

EFFECTS OF THE CORE POLARIZATIONS ON THE HYPER FINE INTERACTION OF THE TRIPLET (3d^2)~3P STATES OF ScII

本文采用Rayleigh-Schrodinger微扰方法计算钪离子ScII3d^2的三重态~3P_2和~3P_1的超精细相互作用常数,并与实验作比较,计算结果表明,原子实的极化(特别是自旋极化)效应对磁偶极常数有着决定性的影响。

The hyperfine interaction constants of the triplet (3d2)8P states of Sell are calculated using Rayieigh-Schrodinger perturbation method. The core polarizations are included to all orders using a recurrence formula and the correlations to low orders. The results are compared with experimental data and MCDF calculations of Young et al. It is found that the core polarization (especially the spin polarization) has drastic effects on the magnetic dipole interaction constant. Our results for constant A (MHz) are-116.667 and -12.442 for 3P1 and 3P2 states respectively, that of the experiments are-107.3(6) and -27.7(8), whereas the MCDF calculations of Young et al. obtained-1.8 and 85.9.