Accumulation of chromium metastable atoms into an Optical Trap

Details Accumulation of chromium metastable atoms into an Optical Trap Accumulation of chromium metastable atoms into an Optical Trap

2007-05-10

arxiv.org/abs/0705.1479v1

Physics

Atomic Physics

7 pages, 5 Figures

Scientific paper

10.1140/epjd/e2007-00245-y

We report the fast accumulation of a large number of metastable 52Cr atoms in a mixed trap, formed by the superposition of a strongly confining optical trap and a quadrupolar magnetic trap. The steady state is reached after about 400 ms, providing a cloud of more than one million metastable atoms at a temperature of about 100 microK, with a peak density of 10^{18} atoms.m^{-3}. We have optimized the loading procedure, and measured the light shift of the 5D4 state by analyzing how the trapped atoms respond to a parametric excitation. We compare this result to a theoretical evaluation based on the available spectroscopic data for chromium atoms.

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