Dissociation of Feshbach molecules into different partial waves

Stephan Dürr; Thomas Volz; Niels Syassen; Gerhard Rempe; Eric Van Kempen; Servaas Kokkelmans; Boudewijn Verhaar; Harald Friedrich

doi:10.1103/PhysRevA.72.052707

Dissociation of Feshbach molecules into different partial waves

Stephan Dürr^*, Thomas Volz, Niels Syassen, Gerhard Rempe, Eric Van Kempen, Servaas Kokkelmans, Boudewijn Verhaar, Harald Friedrich

^*Corresponding author for this work

Research output: Contribution to journal › Article

17 Citations (Scopus)

Abstract

Ultracold molecules can be associated from ultracold atoms by ramping the magnetic field through a Feshbach resonance. A reverse ramp dissociates the molecules. Under suitable conditions, more than one outgoing partial wave can be populated. A theoretical model for this process is discussed here in detail. The model reveals the connection between the dissociation and the theory of multichannel scattering resonances. In particular, the decay rate, the branching ratio, and the relative phase between the partial waves can be predicted from theory or extracted from experiment. The results are applicable to our recent experiment in Rb87, which has a d-wave shape resonance.

Original language	English
Article number	052707
Pages (from-to)	1-13
Number of pages	13
Journal	Physical Review A - Atomic, Molecular, and Optical Physics
Volume	72
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevA.72.052707
Publication status	Published - Nov 2005
Externally published	Yes

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AU - Dürr, Stephan

AU - Volz, Thomas

AU - Syassen, Niels

AU - Rempe, Gerhard

AU - Van Kempen, Eric

AU - Kokkelmans, Servaas

AU - Verhaar, Boudewijn

AU - Friedrich, Harald

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AB - Ultracold molecules can be associated from ultracold atoms by ramping the magnetic field through a Feshbach resonance. A reverse ramp dissociates the molecules. Under suitable conditions, more than one outgoing partial wave can be populated. A theoretical model for this process is discussed here in detail. The model reveals the connection between the dissociation and the theory of multichannel scattering resonances. In particular, the decay rate, the branching ratio, and the relative phase between the partial waves can be predicted from theory or extracted from experiment. The results are applicable to our recent experiment in Rb87, which has a d-wave shape resonance.

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