Dissociation of ultracold molecules with Feshbach resonances

Details Dissociation of ultracold molecules with Feshbach resonances Dissociation of ultracold molecules with Feshbach resonances

2004-05-26

arxiv.org/abs/cond-mat/0405606v2

Phys. Rev. A 70, 031601(R) (2004)

Physics

Condensed Matter

Statistical Mechanics

Scientific paper

10.1103/PhysRevA.70.031601

Ultracold molecules are associated from an atomic Bose-Einstein condensate by ramping a magnetic field across a Feshbach resonance. The reverse ramp dissociates the molecules. The kinetic energy released in the dissociation process is used to measure the widths of 4 Feshbach resonances in 87Rb. This method to determine the width works remarkably well for narrow resonances even in the presence of significant magnetic-field noise. In addition, a quasi-mono-energetic atomic wave is created by jumping the magnetic field across the Feshbach resonance.

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