Browsing by Author "Sun, Y."

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    Photoabsorption by Ultracold Atoms and the Scattering Length
    (American Physical Society, 1995) Côté, R.; Dalgarno, A.; Sun, Y.; Hulet, R.G.; Rice Quantum Institute
    It is shown that photoabsorption in a gas of ultracold atoms depends on the sign and magnitude of the scattering length in the scattering of a pair of atoms. Measurements of fluorescence in 7Li are interpreted to show that the triplet scattering length is negative and the singlet scattering length is positive.