Werner, J.
, Griesmaier, A.
, Hensler, S.
, Stuhler, J.
, Pfau, T.
, Simoni, A.
and Tiesinga, E.
(2005),
Observation of Feshbach Resonances in an Ultracold Gas of <sup>52</sup>Cr, Physical Review Letters
(Accessed April 19, 2024)
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Observation of Feshbach Resonances in an Ultracold Gas of 52Cr
Published
Author(s)
J Werner, A Griesmaier, S Hensler, J Stuhler, Tilman Pfau, ,
Abstract
We have observed Feshbach resonances in elastic collisions between ultracold 52Cr atoms. This is the first observation of collisional Feshbach resonances in an atomic species with more than one valence electron. The zero nuclear spin of 52Cr and thus the absence of a Fermi-contact interaction leads to regularly-spaced resonancesequences. By comparing resonance positions with multi-channel scattering calculations we determine the s-wave scattering length of the lowest ^2S+1}\Sigma_g^+ potentials to be 112(14) a_0, 58(6) a_0 and -7(20) a_0 for S=6, 4, and 2, respectively, where a_0=0.0529 nm. The number in parenthesis is the one-standard deviation uncertainty.Citation
Physical Review Letters
Volume
94
Issue
18
Pub Type
Journals
Keywords
atom-atom collisions, chromium, dipole-dipole interaction, Feshbach resonances
Citation
Created May 8, 2005, Updated October 12, 2021