Berlin 2001 – wissenschaftliches Programm

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A: Atomphysik

A 10: Posters Wednesday (Cooling and Trapping, Electron Scattering and Recombination)

A 10.42: Poster

Mittwoch, 4. April 2001, 12:30–15:00, AT3

Formation and magnetic trapping of cold Cs2 molecules — •Daniel Comparat — Laboratoire Aime Cotton, Bat 505, 91405 Orsay, FRANCE

D. Comparat, C. Drag, B. Laburthe-Tolra, N. Vanhaecke and P. Pillet

Molecules are poor candidates for the laser cooling techniques commonly used with the atoms. In recent years, much progress has been made in producing and manipulating the ultra cold molecule formed through photoassociation in cold atomic sample [1]. We improved a technique which has allowed in 1998 the first observation of cold molecule formation [2].

State-selected caesium dimers were created in a dilute caesium atoms sample with free-bound stimulated Raman transitions, this technique allow us to formed a sample of controlled ro-vibrationnal states of the molecules. We recently succeed in trapping the triplet cold molecules in a magnetic trap.

[1] F. Masnou-Seeuws and P. Pillet, Submitted to Advances in Atomic, Molecular and Optical Physics. [2] A. Fioretti et al. P.R.L. 80, 4402 (1998)