Calculation of the elastic scattering properties for cold and ultracold 39K atoms in a triplet state
Hu Qiu-Bo(胡秋波)a), Wang Xiao-Fei(王晓飞)a), Sun Jin-Feng(孙金锋)a)b)† , and Zhu Zun-Lue(朱遵略)a)c)
a College of Physics and Information Engineering, Henan Normal University, Xinxiang 453007, China; b Department of Physics, Luoyang Normal College, Luoyang 471022, China; c Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610064, China
Abstract The elastic scattering properties for collisions between cold and ultracold 39K atoms in a triplet state are investigated. Based on the recent theoretical and experimental results, the improved hybrid potential is presented for a triplet a3$\Sigma$u+ ground state of K2. Our calculated value of the s-wave scattering length a by using the Numerov method for the triplet state is 79.578a0 and found to be in good agreement with the previous ones. The numbers of bound states are supported by the molecular potential. Pronounced shape resonances appear for the l = 3 partial waves for the a3$\Sigma$u+ state. Furthermore, the s-wave scattering cross section, the total cross section and energy positions of shape resonances for the a3$\Sigma$u+ state are calculated.
Received: 21 December 2006
Revised: 10 January 2007
Accepted manuscript online:
(Interatomic and intermolecular potentials and forces, potential energy surfaces for collisions)
Fund: Project supported by the National Natural Science Foundation of
China (Grant No 10574039) and the Science Foundation for Young Scientists of
Henan Normal University, China (Grant No 2005004).
Cite this article:
Hu Qiu-Bo(胡秋波), Wang Xiao-Fei(王晓飞), Sun Jin-Feng(孙金锋), and Zhu Zun-Lue(朱遵略) Calculation of the elastic scattering properties for cold and ultracold 39K atoms in a triplet state 2007 Chinese Physics 16 2367
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