Epithermal positronium emission from liquid and solid gallium |
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| Institution: | 1. Processes, Materials and Solar Energy Laboratory, CNRS-PROMES (UPR 8521), 7 Rue du Four Solaire, 66120 Font-Romeu, France;2. Institut Européen des Membranes, IEM, UMR-5635, ENSCM, CNRS, Univ Montpellier, Place Eugène Bataillon, 34095 Montpellier cedex 5, France |
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| Abstract: | A vertically configured slow positron beam has been used to study the surface of liquid and solid gallium. A two-state model has been used to fit the Doppler-broadening lineshape parameter as a function of incident positron energy in the range 0–2.5 keV. The experimental results are temperature and phase independent and can be best explained by the emission of positronium from elastic scattering of ephithermal positrons through the surface. |
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