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Low energy positron scattering from helium

Sullivan, James; Jones, Adric; Caradonna, Peter; Makochekanwa, Casten; Buckman, Stephen


A new experiment has been developed for high resolution studies of positron scattering from atoms and molecules. Based on the Surko trap technology, a pulsed positron beam has been used to obtain preliminary measurements of low energy, differential elastic scattering cross sections from helium. The operation of the beamline is described and preliminary absolute cross section values for scattering energies of 5, 10 and 15 eV are presented and compared with contemporary theoretical calculations.

CollectionsANU Research Publications
Date published: 2008
Type: Journal article
Source: Nuclear Instruments and Methods in Physics Research: Section B
DOI: 10.1016/j.nimb.2007.12.014


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