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Elastic scattering and charge transfer in slow collisions: isotopes of H and H+ colliding with isotopes of H and with He

Predrag S Krstic and David R Schultz

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Differential and integral cross sections are calculated in the centre of mass energy range 0.1-100 eV for elastic scattering of protons (H+, D+, T+) by helium and of symmetric combinations of protons (H+, D+, T+) and hydrogen atoms (H, D, T) by hydrogen atoms (H, D, T). In addition, we derive from the elastic differential cross sections the momentum transfer and viscosity cross sections of use in the study of plasma transport, and compute the charge transfer cross section. Fully quantal and semiclassical approaches are utilized in these calculations, as are very accurate electronic potential energy curves. The results are compared with available data.


PACS

34.70.+e Charge transfer

34.20.-b Interatomic and intermolecular potentials and forces, potential energy surfaces for collisions

34.50.-s Scattering of atoms and molecules

31.15.xg Semiclassical methods

Subjects

Atomic and molecular physics

Computational physics

Dates

Issue 14 (28 July 1999)

Received 20 January 1999, in final form 10 May 1999



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