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Off-shell effects in 3-body equations for the atomic reactions of electron-transferстатья
Информация о цитировании статьи получена из
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
- Авторы: Avakov GV, Blokhintsev LD, Dias O., Mukhamedzhanov AM
- Журнал: Journal of Physics B: Atomic, Molecular and Optical Physics
- Том: 27
- Номер: 14
- Год издания: 1994
- Издательство: IOP Publishing
- Местоположение издательства: [Bristol, UK], England
- Первая страница: 3067
- Последняя страница: 3078
- DOI: 10.1088/0953-4075/27/14/039
- Аннотация: We have evaluated off-shell effects in three-body equations of the Alt-Grassberger-Sandhas type for electron-transfer reactions in ion-atomic collisions. The evaluation was made by an iteration method, that is, the contribution of principal value integrals was considered as a correction. Zero- and first-order results were compared. A pole graph was used as an effective potential in a charge-exchange channel. An evaluation of off-shell effects was made for two processes, namely, for H+ + H(1s) and He-2+ + H(1s) collisions at energies 0.2-500 keV amu-1. In the case of the latter reaction the calculations were made without taking into account centre-of-mass Coulomb interaction between He+ and H+ ions in the final state. It was shown that in the resonant transition cases the off-shell effects are non-essential for all energies considered. For the partial cross sections of the non-resonant transfer, the off-shell effects might be essential at low and intermediate energies but their contribution approaches zero for higher energies. In the calculations of the total cross sections of the electron-transfer reactions the off-shell effects are non-essential for all energies considered.
- Добавил в систему: Блохинцев Леонид Дмитриевич