Quantum close-coupling calculations of collisional redistribution of light for Ba(1P←1S) perturbed by helium

被引：2

作者：

Paul-Kwiek, E ^{[1
]}

Czuchaj, E ^{[1
]}

机构：

[1] Univ Gdansk, Inst Theoret Phys & Astrophys, PL-80952 Gdansk, Poland

来源：

MOLECULAR PHYSICS | 1998年 / 95卷 / 01期

关键词：

D O I：

10.1080/00268979809483129

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Cross-sections for optical collisions of the barium atom with He are calculated for a range of detunings around the atomic resonance. Results are obtained from fully quantum mechanical coupled-channels calculations including the ground and two excited molecular (1)Sigma and (1)Pi states. Close-coupling calculations are carried out using the theoretical potential curves for Ba-He, obtained by means of a pseudopotential;SCF-CI technique (Czuchaj, E., Rebentrost, F., Stoll, H., and Preuss, H., 1995, Chem. Phys., 196, 37). For accurate comparison with the experiment (Ni, S. Y., Goetz, W., Meijer, H. A. J., and Andersen, N., 1996, Z. Phys. D, 38, 303), the calculated absorption profile and polarizations have been thermally averaged over the collision energy. The theoretical absorption coefficient and linear polarization ratio agree quite well with the experimental data.

引用

页码：17 / 26

页数：10

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