Elastic scattering of sodium and cesium atoms at ultracold temperatures

doi:10.1088/1674-1056/20/9/093401

中国物理B ›› 2011, Vol. 20 ›› Issue (9): 93401-093401.doi: 10.1088/1674-1056/20/9/093401

Elastic scattering of sodium and cesium atoms at ultracold temperatures

张计才, 王克栋, 刘玉芳, 孙金锋

College of Physics and Information Engineering, Henan Normal University, Xinxiang 453007, China

收稿日期:2011-01-01 修回日期:2011-04-01 出版日期:2011-09-15 发布日期:2011-09-15

Elastic scattering of sodium and cesium atoms at ultracold temperatures

Zhang Ji-Cai(张计才)^a)^†, Wang Ke-Dong(王克栋)^a), Liu Yu-Fang(刘玉芳)^a), and Sun Jin-Feng(孙金锋)^a)b)

^aCollege of Physics and Information Engineering, Henan Normal University, Xinxiang 453007, China; ^b Department of Physics, Luoyang Normal College, Luoyang 471022, China

Received:2011-01-01 Revised:2011-04-01 Online:2011-09-15 Published:2011-09-15

摘要/Abstract

摘要： The elastic scattering properties in a mixture of sodium and cesium atoms are investigated at cold and ultracold temperatures. Based on the accurate interatomic potential for the NaCs mixture, the interspecies s-wave scattering lengths, the effective ranges and the p-wave scattering lengths are calculated by the quantal method and the semiclassical method, respectively. The s-wave scattering lengths are 512.7a₀ for the singlet state and 33.4a₀ for the triplet state. In addition, the spin-change and elastic cross sections are also calculated, and the g-wave shape resonance is found in the total elastic cross sections.

关键词: elastic scattering, s-wave scattering length, spin-change cross section

Abstract: The elastic scattering properties in a mixture of sodium and cesium atoms are investigated at cold and ultracold temperatures. Based on the accurate interatomic potential for the NaCs mixture, the interspecies s-wave scattering lengths, the effective ranges and the p-wave scattering lengths are calculated by the quantal method and the semiclassical method, respectively. The s-wave scattering lengths are 512.7a₀ for the singlet state and 33.4a₀ for the triplet state. In addition, the spin-change and elastic cross sections are also calculated, and the g-wave shape resonance is found in the total elastic cross sections.

Key words: elastic scattering, s-wave scattering length, spin-change cross section

中图分类号: (General theories and models of atomic and molecular collisions and interactions (including statistical theories, transition state, stochastic and trajectory models, etc.))

34.10.+x

34.20.Cf (Interatomic potentials and forces) 34.50.Cx (Elastic; ultracold collisions)

张计才, 王克栋, 刘玉芳, 孙金锋. Elastic scattering of sodium and cesium atoms at ultracold temperatures[J]. 中国物理B, 2011, 20(9): 93401-093401.

Zhang Ji-Cai(张计才), Wang Ke-Dong(王克栋), Liu Yu-Fang(刘玉芳), and Sun Jin-Feng(孙金锋) . Elastic scattering of sodium and cesium atoms at ultracold temperatures[J]. Chin. Phys. B, 2011, 20(9): 93401-093401.

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Elastic scattering of sodium and cesium atoms at ultracold temperatures

Elastic scattering of sodium and cesium atoms at ultracold temperatures

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