High-energy behaviour of the transition probabilities and total cross sections for charge exchange
- 1 December 1977
- journal article
- Published by IOP Publishing in Journal of Physics B: Atomic and Molecular Physics
- Vol. 10 (17) , 3491-3510
- https://doi.org/10.1088/0022-3700/10/17/023
Abstract
A second-order method for charge exchange is introduced. Using the impact-parameter method, a transition amplitude for the ground-state capture from atomic hydrogen by fast protons is obtained in closed analytical form. At vanishingly small impact parameters rho , the Brinkman-Kramers (BK) transition probability (behaving as nu -10 with increasing incident velocity nu ) is found, but reduced by the factor 0.2857. At large impact parameters, the dominant contribution arises from the second-order effects in the second-order in the electron-proton interaction. Total cross sections for the capture into 2s and 3s states of atomic hydrogen in H++H(1s) collisions as well as for the capture summed over all final discrete states of H are in excellent agreement with experimental data.Keywords
This publication has 44 references indexed in Scilit:
- Charge exchange in fast collisions of H+and He2+with heliumJournal of Physics B: Atomic and Molecular Physics, 1977
- Projectile charge dependence of electron-capture cross sections (cosmic rays-interstellar gas interactions)Journal of Physics B: Atomic and Molecular Physics, 1977
- Electron capture from atomic hydrogen by fast protons and alpha particlesJournal of Physics B: Atomic and Molecular Physics, 1977
- Coulomb Brinkman-Kramers approximation: differential cross section for electron captureJournal of Physics B: Atomic and Molecular Physics, 1976
- Electron capture from hydrogen and helium atoms by fast alpha particlesJournal of Physics B: Atomic and Molecular Physics, 1973
- Measurement of the Total Cross Section for Charge Transfer into the Metastable Statefor Proton Collisions with Atomic HydrogenPhysical Review B, 1969
- Measurement of the Total Cross Section for Charge Transfer into the Metastable Statefor Protons Incident onand Ar GasesPhysical Review B, 1969
- Electron Capture from Helium by Fast ProtonsProceedings of the Physical Society, 1963
- Charge transferAdvances in Physics, 1962
- Charge Exchange Cross Sections of Hydrogen Particles in Gases at High EnergiesPhysical Review B, 1958