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Excitation of the n=2 states of helium by positron impact

Caradonna, Peter; Sullivan, James; Jones, Adric; Makochekanwa, Casten; Slaughter, Daniel; Mueller, Dennis; Buckman, Stephen


A high-resolution (ΔE∼55 □ meV) trap-based positron beam has been used to measure absolute scattering cross sections for the excitation of the resolved 2 S1, P states of helium at energies between threshold and 38 eV. The experimental integral cross

CollectionsANU Research Publications
Date published: 2009
Type: Journal article
Source: Physical Review A: Atomic, Molecular and Optical Physics
DOI: 10.1103/PhysRevA.80.060701


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