Phys. Rev. A 59, 578–584 (1999)Determination of collisional properties of cold Na atoms from analysis of bound-state photoassociation and Feshbach resonance field dataReceived 26 May 1998; published in the issue dated January 1999 We review the information on the interactions between cold ground-state Na atoms following from Na2 bound states, a Na photoassociation experiment, and a recent observation of field-induced Feshbach resonances in a Na Bose condensate. We obtain a set of Na interaction parameters that is in excellent agreement with all these experimental data. The existing discrepancy between different values for the scattering length a1,-1 of Na atoms in the |1,-1〉 hyperfine state is resolved. The present interaction parameters enable us to give accurate predictions for the singlet and triplet scattering lengths aS and aT, a1,-1, scattering lengths for collisions between Na atoms in other hyperfine states, and resonance fields of several yet unobserved Feshbach resonances. We find aS=(19.1±2.1)a0,aT=(65.3±0.9)a0, and a1,-1(B=0)=(55.4±1.2)a0. © 1999 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.59.578
DOI:
10.1103/PhysRevA.59.578
PACS:
32.80.Pj, 34.20.Cf, 34.50.Rk, 34.50.Pi
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