Positron-CO scattering below the positronium threshold
- 28 February 1986
- journal article
- Published by IOP Publishing in Journal of Physics B: Atomic and Molecular Physics
- Vol. 19 (4) , L105-L110
- https://doi.org/10.1088/0022-3700/19/4/002
Abstract
The author presents the first calculations on the total cross sections of e+-CO vibrationally elastic scattering in the energy range from 0.25 eV up to the positronium threshold. In the adiabatic-nuclei approximation, a single-centre expansion approach is employed to determine the fully converged scattering parameters. The e+-CO interaction energy is composed of an accurate repulsive static term and a parameter-free attractive correlation-polarisation potential. The results for the total cross sections are compared with recent measurements; the agreement is fair except below 2 eV, where theory underestimates the experimental data by about 50%. Results on the differential, momentum transfer and rotational excitation are also reported in the same energy region.Keywords
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