Convergence of two-center expansions in positron-hydrogen collisions

Details Convergence of two-center expansions in positron-hydrogen collisions Convergence of two-center expansions in positron-hydrogen collisions

1999-08-16

arxiv.org/abs/physics/9908030v1

Physics

Atomic Physics

Four pages, three figures

Scientific paper

10.1088/0953-4075/33/18/101

The positron-hydrogen atom scattering system is considered within the S-wave model. Convergence in the elastic scattering, excitation, ionization, and positronium formation channels is studied as a function of the number and type of states used to expand the total wave function. It is found that all unphysical resonances disappear only if near-complete pseudostate expansions are applied to both the atomic and positronium centers.

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