Calculation of the elastic collision properties of Na and Li atoms at ultracold temperature
Zhang Ji-Cai(张计才)a)†, Zhang Ying(张莹)a), Du Bing-Ge(杜丙阁)a), and Sun Jin-Feng(孙金锋)a)b)
a College of Physics and Information Engineering, Henan Normal University, Xinxiang 453007, China; b Department of Physics, Luoyang Normal College, Luoyang 471022, China
Abstract This paper firstly reports a theoretical study of elastic scattering properties in a mixture of 23Na and 7Li atoms at cold and ultracold temperatures in detail. Based on the new constructed accurate singlet $X^1\varSigma_g^+$ and the triplet $a^3\varSigma_u^+$ states interatomic potentials for 23Na7Li mixture, it calculates the scattering lengths and the effective ranges by three computational methods, and obtains good agreements. Using the mass scaling method, it also calculates 23Na6Li scattering lengths and s-wave and total elastic cross sections, whose rich resonance structures were found and interpreted in terms of quasibound diatomic levels trapped behind a centrifugal barrier.
Received: 22 June 2008
Revised: 02 August 2008
Accepted manuscript online:
(General theories and models of atomic and molecular collisions and interactions (including statistical theories, transition state, stochastic and trajectory models, etc.))
Fund: Project supported by the National
Natural Science Foundation of China (Grant No 10574039) and the
Natural Science Foundation of
Henan Province (Grant No 2008A140007).
Cite this article:
Zhang Ji-Cai(张计才), Zhang Ying(张莹), Du Bing-Ge(杜丙阁), and Sun Jin-Feng(孙金锋) Calculation of the elastic collision properties of Na and Li atoms at ultracold temperature 2009 Chin. Phys. B 18 1486
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