title: High resolution feshbach spectroscopy of cesium
abstract: We measure high-resolution Feshbach resonance spectra for ultracold cesium atoms colliding in different hyperfine and magnetic sublevels. More than 25 resonances are observed for magnetic fields up to 230 G and their positions are measured with an accuracy down to 0.03 G. From these spectra several ground-state molecular interaction parameters can be extracted with sufficient accuracy to permit for the first time an unambiguous and accurate determination of cesium's ultracold collision properties [P. J. Leo, C. J. Williams, and P. S. Julienne, following Letter, Phys. Rev. Lett. 85, 2721 (2000)].
authors.affiliation: Department of Physics, Stanford University, Stanford, California 94305-4060, USA.
authors.initials: C
authors.lastname: Chin
authors.initials: V
authors.lastname: Vuletic
authors.initials: AJ
authors.lastname: Kerman
authors.initials: S
authors.lastname: Chu