Positronium-hydrogen atom elastic scattering at medium energies
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Iop Publishing Ltd
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Abstract
We study the elastic scattering of positronium atoms by hydrogen atoms at medium energies using partial-wave Born-Oppenheimer (BO) exchange amplitudes and report accurate BO cross sections in the energy range 0 to 60 eV. The present BO results agree with a 22-state R-matrix and a five-state coupled-channel model potential calculation, but disagree strongly with a conventional close-coupling calculation as well as its input BO amplitudes at medium energies.
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English
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Journal of Physics B-atomic Molecular and Optical Physics. Bristol: Iop Publishing Ltd, v. 33, n. 20, p. L761-L765, 2000.
