The influence of collision energy on magnetically tuned^(6)Li-^(6)Li Feshbach resonance  

作　　者：Rong Zhang Yong-Chang Han Shu-Lin Cong Maksim B Shundalau 张蓉;韩永昌;丛书林;Maksim B Shundalau(Department of Physics,Dalian University of Technology,Dalian 116024,China;DUT-BSU Joint Institute,Dalian University of Technology,Dalian 116024,China;Physics Department,Belarusian State University,Minsk,Belarus)

机构地区：[1]Department of Physics,Dalian University of Technology,Dalian 116024,China [2]DUT-BSU Joint Institute,Dalian University of Technology,Dalian 116024,China [3]Physics Department,Belarusian State University,Minsk,Belarus

出　　处：《Chinese Physics B》2022年第6期326-333,共8页中国物理B（英文版）

基　　金：supported by the National Key Research and Development Program of China(Grant No.2018YFA0306503);the National Natural Science Foundation of China(Grant Nos.21873016 and 12174044);the International Cooperation Fund Project of DBJI(Grant No.ICR2105);the Fundamental Research Funds for the Central Universities(Grant No.DUT21LK08)。

摘　　要：The effect of collision energy on the magnetically tuned^(6)Li-^(6)Li Feshbach resonance(FR)is investigated theoretically by using the coupled-channel(CC)method for the collision energy ranging from 1μK·kBto 100μK·kB.At the collision energy of 1μK·kB,the resonance positions calculated are 543.152 Gs(s wave,the unit 1 Gs=10^(-4)T),185.109 Gs(p wave|ml|=0),and 185.113 Gs(p wave|ml|=1),respectively.The p-wave FR near 185 Gs exibits a doublet structure of 4 mGs,associated with dipole-dipole interaction.With the increase of the collision energy,it is found that the splitting width remains the same(4 mGs),and that the resonance positions of s and p waves are shifted to higher magnetic fields with the increase of collision energy.The variations of the other quantities including the resonance width and the amplitude of the total scattering section are also discussed in detail.The thermally averaged elastic rate coefficients at T=10,15,20,25 K are calculated and compared.

关 键 词：Feshbach resonance collision energy ^(6)Li-^(6)Li system 

分 类 号：O56[理学—原子与分子物理]