Fraunhofer diffraction of atomic matter waves: electron transfer studies with a laser cooled target.
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.
van der Poel
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Niels Bohr Institute, Ørsted Laboratory, DK-2100 Copenhagen, Denmark.
Nielsen
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Gearba
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Andersen
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