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Neutralisation in H + +H - collisions

1985; IOP Publishing; Volume: 18; Issue: 12 Linguagem: Inglês

10.1088/0022-3700/18/12/023

1747-3721

R Shingal, B H Bransden, D. R. Flower,

Nuclear Physics and Applications

A two-centre expansion in travelling atomic orbitals is employed to investigate H+-H- collisions at energies at and above 8 keV (lab) for which electron exchange between the hydrogen atoms formed in the neutralisation reaction is unimportant. In addition to the H++H- channel, terms representing H(n=2)+H(1s) and H(n=3)+H(1s) are included in the wavefunction together with a number of pseudostate orbitals designed to overlap the hydrogenic continuum. The calculated cross sections are in agreement at high energies with previous calculations based on a one-electron model by Ermolaev (1985), and also agree quite well at 8-10 keV with the data of Gaily and Harrison (1970).