Differential and partial cross sections of elastic and inelastic positronium-helium-atom scattering
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A three-positronium-state coupled-channel model was utilized to investigate the scattering of positronium (Ps) by a helium atom at low and medium energies. A regularized symmetric nonlocal electron-exchange model potential was utilized for this purpose. The differential cross sections for elastic scattering and target-elastic Ps excitations were calculated. The results were found to agree with the theoretical references.
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Physical Review A - Atomic, Molecular, and Optical Physics, v. 62, n. 6, p. 062708-062701, 2000.
