Scattering lengths for Li-Cs, Na-Cs, K-Cs, and Rb-Cs ultracold collisions.
We present triplet and singlet scattering lengths for X--133Cs collisions (X=6,7Li, 23Na, 39,40,41K, and 85,87Rb). We consider the short-range potential-energy curves based on high-quality ab initio calculations and the long-range potential described by accurate dispersion coefficients available in the literature. Using a Fermi function to smoothly connect the short- and long-range terms we construct the potential for all R and evaluate the scattering length for each mixed species X--Cs. In particular, we predict that the cross section for inelastic processes between 23Na and 133Cs and between 40K and 133Cs will be small as compared with the respective elastic cross sections.
Zanelatto
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Instituto de Fýsica de Sýo Carlos, Universidade de Sýo Paulo, Caixa Postal 369, 13560-970, Sýo Carlos, Sýo Paulo, Brazil. amalia@if.sc.usp.br
Ribeiro
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Napolitano
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Rd