Two body loss rate in a magneto-optical trap of metastable He
Laboratoire Charles Fabry de l'Institut d'Optique (Unité Mixte du CNRS No.
8501) , B.P. 147, 91403 Orsay Cedex, France
2 INFM and Dipartimento di Fisica, Università di Pisa, Piazza Torricelli 2, 56126 Pisa, Italy
3 IFSC, Universidad of São Paulo, Caixa Postal 369, 13560-970, São Carlos S.P., Brazil
Revised: 12 July 1999
Published online: 15 February 2000
We have measured the two body loss rate in a magneto-optical trap containing triplet metastable He atoms. We find a rate constant cm3/s at a -8 MHz detuning, with an uncertainty of a factor 2. This measurement is in disagreement with a recent experiment which measures the absolute, ion-producing collision rate, but agrees with several other published measurements.
PACS: 32.80.Pj – Optical cooling of atoms; trapping / 34.50.Rk – Laser-modified scattering and reactions
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2000