Magnetic Trapping of Metastable Calcium Atoms

Details Magnetic Trapping of Metastable Calcium Atoms Magnetic Trapping of Metastable Calcium Atoms

2002-10-29

arxiv.org/abs/physics/0210119v2

Physics

Atomic Physics

4 figures

Scientific paper

10.1103/PhysRevA.67.021401

Metastable calcium atoms, produced in a magneto-optic trap (MOT) operating within the singlet system, are continuously loaded into a magnetic trap formed by the magnetic quadrupole field of the MOT. At MOT temperatures of 3 mK and 240 ms loading time we observe 1.1 x 10^8 magnetically trapped 3P2 atoms at densities of 2.4 x 10^8 cm^-3 and temperatures of 0.61 mK. In a modified scheme we first load a MOT for metastable atoms at a temperature of 0.18 mK and subsequently release these atoms into the magnetic trap. In this case 240 ms of loading yields 2.4 x 10^8 trapped 3P2 atoms at a peak density of 8.7 x 10^10 cm^-3 and a temperature of 0.13 mK. The temperature decrease observed in the magnetic trap for both loading schemes can be explained only in part by trap size effects.

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