中国物理B ›› 2007, Vol. 16 ›› Issue (8): 2367-2370.doi: 10.1088/1009-1963/16/8/035
胡秋波1, 王晓飞1, 孙金锋2, 朱遵略3
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)
摘要: 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\Sigmau+ 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\Sigmau+ state. Furthermore, the s-wave scattering cross section, the total cross section and energy positions of shape resonances for the a3\Sigmau+ state are calculated.
中图分类号: (Scattering of atoms and molecules)