| Автор | V Chaltykyan |
| Автор | Yu Malakyan |
| Автор | S Shmavonyan |
| Автор | A Papoyan |
| Дата выпуска | 2004-09-28 |
| dc.description | Photochemical formation of caesium hydride in a room temperature cell containing Cs vapour and H<sub>2</sub> under illumination of the mixture by laser radiation tuned to the D<sub>2</sub> atomic resonance line of Cs is reported. The chemical reaction is accompanied by dramatic changes in magnitude of the resonant absorption and fluorescence of Cs atoms in H<sub>2</sub> environment as compared with a pure Cs vapour case. A theoretical model, which takes into account all the optical and chemical processes involved at these densities, is developed. The effective rate of a two-step chemical reaction (1 ± 0.3) × 10<sup>−10</sup> cm<sup>3</sup> s<sup>−1</sup> is determined from the fitting of experimental results to this model, exploiting the laser intensity dependence of the fluorescence signal. Continuous (several hours) illumination of the cell by radiation tuned to the Cs D<sub>2</sub> line results in decrease of the hydrogen pressure in the cell, which is an additional proof for the formation of CsH molecules. The proposed investigation technique is applicable for a large variety of resonant photochemical reactions. Possible application for isotope separation is discussed. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Копирайт | 2004 IOP Publishing Ltd |
| Название | Resonant laser-induced formation of caesium hydride molecules in a room temperature vapour cell: experimental results and rate equation calculations |
| Тип | paper |
| DOI | 10.1088/0953-4075/37/18/013 |
| Electronic ISSN | 1361-6455 |
| Print ISSN | 0953-4075 |
| Журнал | Journal of Physics B: Atomic, Molecular and Optical Physics |
| Том | 37 |
| Первая страница | 3735 |
| Последняя страница | 3743 |
| Аффилиация | V Chaltykyan; Institute for Physical Research, NAS of Armenia, Ashtarak-2, 378410, Armenia |
| Аффилиация | Yu Malakyan; Institute for Physical Research, NAS of Armenia, Ashtarak-2, 378410, Armenia |
| Аффилиация | S Shmavonyan; Institute for Physical Research, NAS of Armenia, Ashtarak-2, 378410, Armenia |
| Аффилиация | A Papoyan; Institute for Physical Research, NAS of Armenia, Ashtarak-2, 378410, Armenia |
| Выпуск | 18 |
