| Автор | A Ray |
| Автор | P P Ray |
| Автор | B C Saha |
| Дата выпуска | 1980-11-28 |
| dc.description | Positronium formation in the ground state and in a number of excited s states including the asymptotic n to infinity has been studied for the reaction e<sup>+</sup>+H<sub>2</sub> to Ps(ns)+H<sub>2</sub><sup>+</sup> in the molecular Jackson-Schiff approximation (1953) in the energy range 50-1000 eV. It is found that the molecular effects play a significant role in the case of Ps formation and a hydrogen molecule cannot be considered as a pair of independent hydrogen atoms at any energy. The excited-state formation cross sections satisfy an n<sup>-3</sup> law approximately. It is also found that Ps formation involving the gerade transition of H<sub>2</sub><sup>++</sup> is the dominant process, although depending on the choice of molecular wavefunction there is a 10-28% probability of Ps formation involving the ungerade transition. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Positronium formation in positron-hydrogen-molecule collisions |
| Тип | paper |
| DOI | 10.1088/0022-3700/13/22/022 |
| Print ISSN | 0022-3700 |
| Журнал | Journal of Physics B: Atomic and Molecular Physics |
| Том | 13 |
| Первая страница | 4509 |
| Последняя страница | 4519 |
| Аффилиация | A Ray; Dept. of Phys., Visva-Bharati Univ., Santiniketan, West Bengal, India |
| Аффилиация | P P Ray; Dept. of Phys., Visva-Bharati Univ., Santiniketan, West Bengal, India |
| Аффилиация | B C Saha; Dept. of Phys., Visva-Bharati Univ., Santiniketan, West Bengal, India |
| Выпуск | 22 |
