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Physical Review A

Precision Feshbach spectroscopy of ultracold Cs2

Cheng Chin, Vladan Vuletić, Andrew J. Kerman, Steven Chu, Eite Tiesinga, Paul J. Leo, Carl J. Williams

Published Sep 3, 2004• 163 citations
Publisher

Abstract

We have observed and located more than 60 magnetic field-induced Feshbach resonances in ultracold collisions of ground-state $^{133}\mathrm{Cs}$ atoms. Multiple extremely weak Feshbach resonances associated with $g$-wave molecular states are detected through variations in the radiative collision cross sections. The Feshbach spectroscopy allows us to determine the interactions between ultracold cesium atoms and the molecular energy structure near the dissociation continuum with unprecedented precision. Our work not only represents a very successful collaboration of experimental and theoretical efforts, but also provides essential information for cesium Bose-Einstein condensation, ${\mathrm{Cs}}_{2}$ molecules, and atomic clock experiments.

DOI
10.1103/physreva.70.032701

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