Tuning the scattering length on the ground triplet state of Cs2

被引：18

作者：

Kokoouline, V ^{[1
]}

Vala, J ^{[1
]}

Kosloff, R ^{[1
]}

机构：

[1] Hebrew Univ Jerusalem, Fritz Haber Res Ctr Mol Dynam, IL-91904 Jerusalem, Israel

来源：

JOURNAL OF CHEMICAL PHYSICS | 2001年 / 114卷 / 07期

关键词：

D O I：

10.1063/1.1343080

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：

Two schemes for tuning the scattering length on the ground triplet state of Cs-2 are developed. The absolute value of the triplet scattering length of Cs-133(2) is determined from the experimental data [A. Fioretti, D. Comparat, C. Drag, C. Amiot, O. Dulieu, F. Masnou-Seeuws, and P. Pillet, Eur. Phys. J. D 5, 389 (1999)], we demonstrate that the large scattering length can be made small and positive by coupling the (3)Sigma (+)(u)(6S+6S) potential to the (3)Pi (g) state by strong off-resonant radiation. A weaker laser field coupling the (3)Sigma (+)(u)(6S+6S) continuum to the lowest bound level of the excited (3)Sigma (+)(g)(6S+6P) state also leads to a small positive scattering length. The scattering length of the Cs-135 isotope is found to be positive. The method used solves the Schrodinger equation for two electronic states coupled by an electromagnetic field with no approximations employed. The scattering length is determined from the calculated continuum wave functions at low energies. (C) 2001 American Institute of Physics.

引用

页码：3046 / 3050

页数：5

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