Sc+18离子1s23d-1s2nf的跃迁能和偶极振子强度

用全实加关联方法计算了类锂Sc 18离子1s23d-1s2nf(4≤n≤9)的跃迁能和1s2nf(n≤9)态的精细结构。依据量子亏损理论确定了该Rydberg系列的量子数亏损,用这些作为能量的缓变函数的量子亏损,可以实现对任意高激发态(n≥10)的能量可靠的预言。利用在计算能量过程中确定的波函数,计算了Sc 18离子1s23d-1s2nf的偶极跃迁在三种规范下振子强度;将这些分立态振子强度与量子亏损理论相结合,得到在电离阈附近束缚态-束缚态跃迁振子强度以及束缚态-连续态跃迁振子强度密度,从而将Sc 18离子的这一重要光谱特性的理论预言外推到整个能域。

Transition energy and dipole oscillator strength of Sc+18 ion

The transition energies for the 1s~23d-1s~2nf(4≤n≤9) and fine structure splittings of 1s~2nf(n≤9) states of lithiumlike Sc~(+18) ion are calculated with the full-core plus correlation(FCPC) method.The quantum defects of this Rydberg series are determined by the single-channel quantum defect theory.The energies of any highly excited states with n≥10 for this series can be reliably predicted using the quantum defects that are function of energy.Three alternative forms of the dipole oscillator strengths for the 1s~23d-1s~2nf(n≤9) transitions of Sc~(+18)ion are calculated with the energies and wave functions obtained above.Combining the quantum defect theory with the discrete oscillator strengths,the discrete oscillator strengths for the transitions from the given initial state to highly excited states(n≥10) and the oscillator strengths density corresponding to the bound-free transitions are obtained.