Application of the advanced adiabatic approach to charge exchange in slow collisions between H and
- 1 July 1993
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 48 (1) , 432-441
- https://doi.org/10.1103/physreva.48.432
Abstract
We study charge exchange in slow atomic collisions within the framework of the advanced adiabatic approach [Grozdanov and Solov’ev, Phys. Rev. A 42, 2703 (1990)]. In this approach, nonadiabatic transitions near hidden or avoided crossings are related to branch points connecting adiabatic potential curves at complex values of the internuclear distance. A program package has been developed that automatically takes into account all relevant nonadiabatic transition amplitudes for the calculation of charge-transfer cross sections. The present method allows the inclusion of a large number of molecular-orbital basis functions and turns out to be extremely fast. As an example, partial and total cross sections are calculated for charge exchange in slow +H(1s) collisions. The results are compared to previous theoretical and experimental data.
Keywords
This publication has 23 references indexed in Scilit:
- Multiple electron capture by highly charged ions at keV energiesJournal of Physics B: Atomic, Molecular and Optical Physics, 1992
- The semiclassical close-coupling description of atomic collisions: Recent developments and resultsPhysics Reports, 1991
- State Selective Electron Capture in Collisions of C6+and O8+on Atomic and Molecular Hydrogen Studied by Photon Emission SpectroscopyPhysica Scripta, 1989
- Electron capture in collisions of O8+ with H: Absolute line emission cross sectionsPhysics Letters A, 1987
- Measurements of Charge Transfer and Ionization in Collisions Involving Hydrogen AtomsPublished by Elsevier ,1986
- Low-energy total-electron-capture cross sections for fully stripped and H-like projectiles incident on H andPhysical Review A, 1985
- Total Capture and Line-Emission Cross Sections for -, -, -H Collisions in the Energy Range 3-7.5 keV/uPhysical Review Letters, 1985
- State-selective electron capture in atom-highly charged ion collisionsPhysics Reports, 1985
- Atomic-orbital-expansion studies of electron transfer in bare-nucleus—hydrogen-atom collisionsPhysical Review A, 1984
- Modified method of perturbed stationary states. IV. Electron-capture cross sections for the reactionPhysical Review A, 1982