Solid State Studies Utilizing an Intense Low Energy PositronBeam
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An intense monoenergetic, variable low energy beam of positrons                 has been constructed at the Brookhaven National Laboratory.  This               is more than 100 times greater than any existing beams from                     radioactive sources.  They propose to increase further the low                  energy positron beam flux by two orders of magnitude, and to                    carry out two types of experiments with it.  The first is to                    produce a beam of positronium atoms to determine the reflection                 coefficient of positronium as a function of its energy from solid               surfaces to determine whether positronium diffraction would be a                useful tool for analyzing the structure of solid surfaces.  The                 second type of experiment consists of measuring the angular                     correlation of annihilation radiation resulting from positrons                  annihilating on the surface of solids, and thereby obtain the                   surface electrons momentum density distribution.
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{'Code': '176100', 'Text': 'SOLID STATE PHYSICS'}
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