Resonant Magnetic Field Control of Elastic Scattering in Cold 85Rb

Published

December 1, 1998

Author(s)

J L. Roberts, N R. Claussen, J P. Burke, C H. Greene, Eric A. Cornell, C E. Wieman

Abstract

A magnetic field-dependent Feshbach resonance has been observed in the elastic scattering collision rate between stoms in the F = 2, M = -2 state of ⁸⁵Rb. Changing the magnetic field by several Gauss caused the collision rate to vary by a factor of 10⁴, and the sign of the scattering length could be reversed. The resonance peak is at 155.2 (4) G and its width is 11.6(5) G. From these results we extract much improved values for the three quantitites that characterize the interaction potential: The van der Walls coefficient C₆, the singlet scattering length a_s, and the triplet scattering length a_r.

Citation

Physical Review Letters

Volume

81

Issue

No. 23

Pub Type

Journals

Keywords

Bose-Einstein condensation, interatomic potentials, optical cooling of atoms, scattering of atoms, trapping

Citation

Roberts, J. , Claussen, N. , Burke, J. , Greene, C. , Cornell, E. and Wieman, C. (1998), Resonant Magnetic Field Control of Elastic Scattering in Cold 85Rb, Physical Review Letters (Accessed September 21, 2026)

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