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| HAL : hal-00002196, version 3 |
| arXiv : physics/0407064 |
| Fiche détaillée |  Récupérer au format |
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| Versions disponibles : | v1 (13-07-2004) | v2 (16-07-2004) | v3 (07-08-2006) |
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| First observation of feshbach resonances at very low magnetic field in a 133Cs fountain. |
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| H. Marion 1S. Bize 1 |
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| (13/07/2004) |
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| One of the main limitations of cesium atomic fountains has been the cold collision frequency shift. By using a method based on a transfer of population by adiabatic passage allowing to prepare cold atomic samples with a well defined ratio of atomic density as well as atom number the collisional shift is controlled at the 10E-3 of its value. A calibration of Zeeman sub-states contribution to the clock shift as a function of the field has been performed. Feshbach resonances have been observed for the first time at very low magnetic field and with a very good resolution. A Monte Carlo simulation has been performed and could fit properly some of experimental data. This constrains some parameters of the theory of collisions. |
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| 1 : | Systèmes de Référence Temps Espace (SYRTE) |
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CNRS : UMR8630 – INSU – Observatoire de Paris – Université Paris VI - Pierre et Marie Curie |
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| 2 : | The University of Western Australia (UWA) |
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University of Western Australia |
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| 3 : | Laboratoire Kastler Brossel (LKB (Lhomond)) |
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CNRS : UMR8552 – Université Paris VI - Pierre et Marie Curie – Ecole Normale Supérieure de Paris - ENS Paris |
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| Domaine | : | Physique/Physique/Physique Atomique Physique/Matière Condensée/Autre |
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| Feshbach – Feshbach resonance – clock – Atomic fountain – cryogenic oscillator – frequency measurement – cold collisions – adiabatic passage – precision measurement – cesium |
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| Liste des fichiers attachés à ce document : | ||||||||||
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| hal-00002196, version 3 | |
| http://hal.archives-ouvertes.fr/hal-00002196 | |
| oai:hal.archives-ouvertes.fr:hal-00002196 | |
| Contributeur : Harold Marion | |
| Soumis le : Samedi 5 Août 2006, 02:59:58 | |
| Dernière modification le : Lundi 7 Août 2006, 09:03:06 | |
