Charge exchange in fast collisions of H+and He2+with helium
- 11 July 1977
- journal article
- Published by IOP Publishing in Journal of Physics B: Atomic and Molecular Physics
- Vol. 10 (10) , 1923-1932
- https://doi.org/10.1088/0022-3700/10/10/021
Abstract
The continuum distorted-wave (CDW) approximation is used to calculate total cross sections for the charge-exchange process H++He(1s2) to H(1s, 2s, 2p, 3s, 3p, 3d, 4s)+He+(1s) in the impact energy range 25 keV-10.5 MeV. The results obtained are compared with experimental data and it is found that the CDW method is quite successful in the prediction of the electron capture into the s states of H. The CDW cross sections Qtot for the electron capture summed over all final projectile bound states in the reaction He2++He(1s2) to He+( Sigma )+He+(1s) agree well with experimental data at impact energies 500 keV-7 MeV. In addition, several approximate good-state wavefunctions of He are used to establish the degree of sensitivity of the CDW cross sections to the choice of wavefunction.Keywords
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