Electron detachment and charge exchange in H-scattering by atomic deuterium
- 28 October 1980
- journal article
- Published by IOP Publishing in Journal of Physics B: Atomic and Molecular Physics
- Vol. 13 (20) , 4039-4047
- https://doi.org/10.1088/0022-3700/13/20/017
Abstract
Results of a differential time-of-flight energy-loss study of H- scattering by D (and D- scattering by H) are presented. Differential cross sections for charge exchange, detachment and excitation were measured in the 100-1000 eV laboratory energy range and 0-1 keV deg reduced angular range. Contrary to the low-energy (less than 1 eV) predictions of Mizuno and Chen (1969) no oscillatory structure was observed in these cross sections. The charge exchange and elastic DCS are found to be strongly absorbed by detachment. Integration of the low-energy DCS and comparison with the total charge exchange cross section of Hummer and co-workers (1960) yielded an absolute calibration. A total detachment cross section for energies below 500 eV was thus obtained. This cross section is not found to decrease with energy. Experimental evidence for detachment from the 2 Sigma gH-2 state into the 'parent' 3 Sigma u H2 state is presented.Keywords
This publication has 18 references indexed in Scilit:
- Theoretical study of the detachment process in the zero-range potential approximation. H--He collisionsJournal of Physics B: Atomic and Molecular Physics, 1980
- Electron loss by 1-300 keV H-ions in H and H2Journal of Physics B: Atomic and Molecular Physics, 1980
- Dissociative attachment and vibrational excitation in low-energy collisions of electrons withandPhysical Review A, 1979
- Variational calculations of resonant states of H2-Journal of Physics B: Atomic and Molecular Physics, 1978
- Differential study of H--inert-gas collisionsJournal of Physics B: Atomic and Molecular Physics, 1978
- Feshbach projection-operator calculation of the resonant states of H2-Journal of Physics B: Atomic and Molecular Physics, 1977
- Elastic and inelastic processes in He+-H collisions in the keV energy rangeJournal of Physics B: Atomic and Molecular Physics, 1976
- Electron-Detachment in Slow Collisions between Atoms and Negative IonsPhysical Review B, 1967
- Electron detachment and charge transfer in H-H-collisionsProceedings of the Physical Society, 1967
- Electron resonances of the H2-ionProceedings of the Physical Society, 1966