Accurate calculation of the elastic scattering properties of 7Li atoms at ultralow temperatures

doi:10.1088/1009-1963/15/3/014

Abstract

Abstract The elastic scattering properties for collisions between two ⁷Li atoms are investigated in the cold and ultracold regimes separately. Based on recent theoretical and experimental results, we present the improved hybrid potentials for the singlet X¹∑_g⁺ and triplet a³∑_u⁺ ground states of the Li₂. Our calculated values for the scattering lengths a and the effective ranges r_e are compared with previous ones and found them to be in good agreement. The scattering lengths are 34.6a₀ for the singlet state and ?27.6a₀ for the triplet state. Shape resonances occur in the collisions at low energies. We also calculate the total cross sections and the energy positions of shape resonances for both X¹∑_g⁺ and a³∑_u⁺ states.

Keywords: scattering length elastic cross section shape resonance

Received: 16 July 2005
Revised: 22 November 2005
Accepted manuscript online:

PACS:	34.80.Bm	(Elastic scattering)
	34.20.Cf	(Interatomic potentials and forces)
	34.20.-b	(Interatomic and intermolecular potentials and forces, potential energy surfaces for collisions)

Fund: Project supported by the National Natural Science Foundation of China (Grant No 10174019).

Cite this article:

Sun Jin-Feng (孙金锋), Zhang Ji-Cai (张计才), Wang Jie-Min (王杰敏) Accurate calculation of the elastic scattering properties of ⁷Li atoms at ultralow temperatures 2006 Chinese Physics 15 531

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Accurate calculation of the elastic scattering properties of 7Li atoms at ultralow temperatures

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Accurate calculation of the elastic scattering properties of ⁷Li atoms at ultralow temperatures