| Автор | M A Bouchene |
| Автор | S Zamith |
| Автор | B Girard |
| Дата выпуска | 2001-04-28 |
| dc.description | This paper presents a theoretical analysis of the possibilities of producing spin-polarized electrons with a sequence of two ultra-short time-delayed laser pulses. The first pulse, which is right circularly polarized, excites resonantly the fine structure np level of potassium atoms leading to a spin-flip and thus polarizing the atom. The second pulse ionizes the system thereby resulting in spin-polarized electron release. We examine and compare several situations corresponding to different polarizations of the ionizing pulse (σ<sup>+</sup>,σ<sup>-</sup> and π). For each case we derive analytical expressions for the angular and global electron spin-polarization rates as well as for the differential cross sections. The obtained rates can be very high (up to 100%) and can be controlled accurately on the femtosecond time scale by varying the time delay between the pulses. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Spin-polarized electrons produced by a sequence of two femtosecond pulses. Calculation of differential and global polarization rates |
| Тип | paper |
| DOI | 10.1088/0953-4075/34/8/313 |
| Electronic ISSN | 1361-6455 |
| Print ISSN | 0953-4075 |
| Журнал | Journal of Physics B: Atomic, Molecular and Optical Physics |
| Том | 34 |
| Первая страница | 1497 |
| Последняя страница | 1512 |
| Аффилиация | M A Bouchene; Laboratoire de Collisions, Agrégats, Réactivité, CNRS UMR5589, Université Paul Sabatier, 118 Route de Narbonne, 31062 Toulouse, France |
| Аффилиация | S Zamith; Laboratoire de Collisions, Agrégats, Réactivité, CNRS UMR5589, Université Paul Sabatier, 118 Route de Narbonne, 31062 Toulouse, France |
| Аффилиация | B Girard; Laboratoire de Collisions, Agrégats, Réactivité, CNRS UMR5589, Université Paul Sabatier, 118 Route de Narbonne, 31062 Toulouse, France |
| Выпуск | 8 |
