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Thomann, Pierre

Nom
Thomann, Pierre
Affiliation principale
Fonction
Professeur.e émérite
Email
pierre.thomann@unine.ch
Identifiants
https://libra.unine.ch/handle/123456789/481
_
0000-0002-3055-7120

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  • Publication
    Métadonnées seulement
    Bright, slow, and continuous beam of laser-cooled cesium atoms
    (1999)
    Berthoud, Patrick
    ;
    Fretel, Emmanuel
    ;
    Thomann, Pierre 
    By the moving molasses technique we have extracted laser-cooled cesium atoms in a continuous way directly from an optical molasses. The mean launching velocity is precisely tunable from 1 to 12 m/s. The atomic beam has a flux of 1.3 x 10(8) atom/s at 7 m/s and a longitudinal temperature of 70 mu K; which represents the highest flux and lowest velocity spread obtained so far in a continuous beam of cold atoms. These features makes it well suited for atomic fountains. The atomic flux can be slightly increased in a two-dimensional magneto-optical trap operation (+40%). A simple model accounts for the observed dependence of the flux with the magnetic-field gradient. [S1050-2947(99)51212-2].