title: Fraunhofer diffraction of atomic matter waves: electron transfer studies with a laser cooled target.
abstract: We have constructed an apparatus combining the experimental techniques of cold target recoil ion momentum spectroscopy and a laser cooled target. We measure angle differential cross sections in Li(+)+Na-->Li+Na(+) electron transfer collisions in the keV energy regime with a momentum resolution of 0.12 a.u. yielding an order of magnitude better angular resolution than previous measurements. We resolve Fraunhofer-type diffraction patterns in the differential cross sections. Good agreement with predictions of the semiclassical impact parameter method is obtained.
authors.affiliation: Niels Bohr Institute, Ørsted Laboratory, DK-2100 Copenhagen, Denmark.
authors.forename: M
authors.initials: M
authors.lastname: van der Poel
authors.forename: C V
authors.initials: CV
authors.lastname: Nielsen
authors.forename: M A
authors.initials: MA
authors.lastname: Gearba
authors.forename: N
authors.initials: N
authors.lastname: Andersen