| Автор | K Abich |
| Автор | A Keil |
| Автор | D Reiss |
| Автор | Ch Wunderlich |
| Автор | W Neuhauser |
| Автор | P E Toschek |
| Дата выпуска | 2004-03-01 |
| dc.description | With two ions in a spheroidal Paul trap, the harmonic trapping potential turns, by Coulomb repulsion, into a bistable well. Two Ba ions have been confined, laser-cooled, and observed, via their laser-excited resonance scattering, by a spatially resolving photomultiplier, or intensifying CCD camera. A repump laser releases the ions from a metastable state. Well-cooled ions are found localized. When the laser is detuned, the Raman cooling rate and the ions’ temperature vary. A transition from the crystallized state to a toroidal gas takes place. The ions are discriminated when one (i) gets excited into a non-fluorescing metastable state, or (ii) is of another isotopic species. Hopping rates of 1 s<sup>−1</sup> are found at high thermal excitation. Elsewhere, the rates drop by two orders of magnitude, and vary resonantly with temperature near potential energy/kinetic energy = 15, where the bright ion’s hopping upstream of the laser beam is five times more likely than downstream. Two discernible ions in a trap represent a microscopic model system for the study of reaction kinetics. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Копирайт | IOP Publishing Ltd |
| Название | Thermally activated hopping of two ions trapped in a bistable potential well |
| Тип | paper |
| DOI | 10.1088/1464-4266/6/3/004 |
| Electronic ISSN | 1741-3575 |
| Print ISSN | 1464-4266 |
| Журнал | Journal of Optics B: Quantum and Semiclassical Optics |
| Том | 6 |
| Первая страница | S18 |
| Последняя страница | S23 |
| Аффилиация | K Abich; Institut für Laser-Physik, Universität Hamburg, Jungius-Strasse 9, D-20355 Hamburg, Germany |
| Аффилиация | A Keil; Institut für Laser-Physik, Universität Hamburg, Jungius-Strasse 9, D-20355 Hamburg, Germany |
| Аффилиация | D Reiss; Institut für Laser-Physik, Universität Hamburg, Jungius-Strasse 9, D-20355 Hamburg, Germany |
| Аффилиация | Ch Wunderlich; Institut für Laser-Physik, Universität Hamburg, Jungius-Strasse 9, D-20355 Hamburg, Germany |
| Аффилиация | W Neuhauser; Institut für Laser-Physik, Universität Hamburg, Jungius-Strasse 9, D-20355 Hamburg, Germany |
| Аффилиация | P E Toschek; Institut für Laser-Physik, Universität Hamburg, Jungius-Strasse 9, D-20355 Hamburg, Germany |
| Выпуск | 3 |
