2 papers
cond-mat.other2005
Hanbury Brown Twiss effect for ultracold quantum gases
M. Schellekens, R. Hoppeler, A. Perrin +4
We have studied 2-body correlations of atoms in an expanding cloud above and below the Bose-Einstein condensation threshold. The observed correlation function for a thermal cloud s…
cond-mat.other2004
Getting the elastic scattering length by observing inelastic collisions in ultracold metastable helium atoms
Signe Seidelin, Rodolphe Hoppeler, Olivier Sirjean +4
We report an experiment measuring simultaneously the temperatureand the flux of ions produced by a cloud of triplet metastablehelium atoms at the Bose-Einstein critical temperature…