Physics – Condensed Matter – Statistical Mechanics
Scientific paper
2004-10-04
Phys. Rev. A 72, 010704(R) (2005)
Physics
Condensed Matter
Statistical Mechanics
Introduction rewritten
Scientific paper
10.1103/PhysRevA.72.010704
We present a new spectroscopy technique for studying cold-collision properties. The technique is based on the association and dissociation of ultracold molecules using a magnetically tunable Feshbach resonance. The energy and lifetime of a shape resonance are determined from a measurement of the dissociation rate. Additional spectroscopic information is obtained from the observation of a spatial interference pattern between an outgoing s wave and d wave. The experimental data agree well with the results from a new model, in which the dissociation process is connected to a scattering gedanken experiment, which is analyzed using a coupled-channels calculation.
Dürr Stephan
Kempen Eric van
Kokkelmans Servaas
Rempe Gerhard
Syassen Niels
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