Feshbach Spectroscopy of a Shape Resonance
Statistical Mechanics
2007-05-23 v3
Abstract
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.
Cite
@article{arxiv.cond-mat/0410083,
title = {Feshbach Spectroscopy of a Shape Resonance},
author = {Thomas Volz and Stephan Dürr and Niels Syassen and Gerhard Rempe and Eric van Kempen and Servaas Kokkelmans},
journal= {arXiv preprint arXiv:cond-mat/0410083},
year = {2007}
}
Comments
Introduction rewritten