期刊
PHYSICAL REVIEW A
卷 94, 期 6, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.94.062514
关键词
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资金
- Australian Research Council (ARC) Discovery Project [DP1092620]
- National Natural Science Foundation of China (NSFC) [11147018, 11564036]
- NSFC [11304063]
- ARC Future Fellowship [FT100100905]
- Australian Research Council [DP1092620, FT100100905] Funding Source: Australian Research Council
A relativistic description of the structure of heavy alkali-metal atoms and alkali-like ions using S-spinors and L-spinors is developed. The core wave function is defined by a Dirac-Fock calculation using an S-spinor basis. The S-spinor basis is then supplemented with a large set of L-spinors for calculation of the valence wave function in a frozen-core model. The numerical stability of the L-spinor approach is demonstrated by computing the energies and decay rates of several low-lying hydrogen eigenstates, along with the polarizabilities of a Z = 60 hydrogenic ion. The approach is then applied to calculate the dynamic polarizabilities of the 5s, 4d, and 5p states of Sr+. The magic wavelengths at which the Stark shifts between different pairs of transitions are 0 are computed. Determination of the magic wavelengths for the 5s -> 4d(3/2) and 5s -> 4d(5/2) transitions near 417 nm (near the wavelength for the 5s -> 5(pj) transitions) would allow determination of the oscillator strength ratio for the 5s -> 5p(1/2) and 5s -> 5(p3/2) transitions.
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