Light-Induced Atomic Desorption for loading a Sodium Magneto-Optical Trap

Details Light-Induced Atomic Desorption for loading a Sodium Magneto-Optical Trap Light-Induced Atomic Desorption for loading a Sodium Magneto-Optical Trap

2009-11-05

arxiv.org/abs/0911.0957v4

Physics

Atomic Physics

Sodium LIAD loaded MOT, 7 pages, 5 figures. Revised submitted manuscript with minor corrections, new data presented, Fig.5 cha

Scientific paper

We report studies of photon-stimulated desorption (PSD), also known as light-induced atomic desorption(LIAD), of sodium atoms from a vacuum cell glass surface used for loading a magneto-optical trap (MOT). Fluorescence detection was used to record the trapped atom number and the desorption rate. We observed a steep wavelength dependence of the desorption process above 2.6 eV photon energy, a result significant for estimations of sodium vapor density in the lunar atmosphere. Our data fit well to a simple model for the loading of the MOT dependent only on the sodium desorption rate and residual gas density. Up to 3.7x10^7 Na atoms were confined under ultra-high vacuum conditions, creating promising loading conditions for a vapor cell based atomic Bose-Einstein condensate of sodium.

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