We report progress on our experiments reflecting Helium from Lithium Fluoride (LiF). We have undertaken a systematic study of the production of atomically flat single crystal LiF surfaces, which are produced by cleaving the crystal. The flatness of the cleaved surface depends on the defect density in the crystal, which we produce via varying doses of gamma irradiation. We measure the flatness via atomic force microscopy, and correlate these results with the reflected intensity of the beam from the crystal. Matter wave effects, such as diffraction of the beam from the crystal surface, will be discussed.
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Authors
Adam Libson
Department of Physics and Center for Nonlinear Dynamics, The University of Texas at Austin
Department of Physics and Center for Nonlinear Dynamics, University of Texas at Austin
Christoph Schaeff
Institute for Experimental Physics, University of Vienna; Institute for Quantum Optics and Quantum Information, Austrian Academy of Sciences
Department of Physics and Center for Nonlinear Dynamics, The University of Texas at Austin
Geneva White
Department of Physics and Center for Nonlinear Dynamics, The University of Texas at Austin
Mark Raizen
Department of Physics and Center for Nonlinear Dynamics, The University of Texas at Austin
Department of Physics and Center for Nonlinear Dynamics, University of Texas at Austin
