| Автор | J F Reading |
| Автор | A L Ford |
| Автор | R L Becker |
| Дата выпуска | 1981-06-28 |
| dc.description | In a series of recent papers the authors have studied the inner-shell direct ionisation and charge transfer processes that occur when a light ion with nuclear charge Z<sub>p</sub>, collides with a target atom, nuclear charge Z<sub>T</sub>. They used a single-centred expansion (SCE) method, expanding the single-electron wavefunctions in a set of target-centred Hilbert states. This method is inaccurate if charge transfer is an important channel for electron flux loss and is thus generally restricted to the asymmetric region, Z<sub>p</sub><<Z<sub>T</sub>, in its range of applicability. They present a new atomic orbital method which allows for charge transfer through prechosen time-dependent amplitudes which equal the 'real' amplitudes only at large times. The target excitation and ionisation amplitudes are found variationally but constrained to produce consistent charge transfer amplitudes. The method has the computational efficiency of an SCE approach. They show in an application to the proton-hydrogen problem that it removes the known difficulties that the SCE method had for this symmetric collision. It is hoped that this inexpensive method will find general application to ion-atom collisions in that region of energy where the atomic orbital method is useful. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | A new atomic orbital method for ion-atom collisions |
| Тип | paper |
| DOI | 10.1088/0022-3700/14/12/012 |
| Print ISSN | 0022-3700 |
| Журнал | Journal of Physics B: Atomic and Molecular Physics |
| Том | 14 |
| Первая страница | 1995 |
| Последняя страница | 2012 |
| Аффилиация | J F Reading; Dept. of Phys., Texas A & M Univ., College Station, TX, USA |
| Аффилиация | A L Ford; Dept. of Phys., Texas A & M Univ., College Station, TX, USA |
| Аффилиация | R L Becker; Dept. of Phys., Texas A & M Univ., College Station, TX, USA |
| Выпуск | 12 |
