Physics – Atomic Physics
Scientific paper
2002-12-05
Physics
Atomic Physics
This paper has been accepted by PRA
Scientific paper
10.1103/PhysRevA.67.011401
We report the magnetic trapping of metastable $^3P_2$ atomic strontium. Atoms are cooled in a magneto-optical trap (MOT) operating on the dipole allowed $^1S_0-^1P_1$ transition at 461 nm. Decay via $^1P_1\to {^1D_2}\to {^3P_2}$ continuously loads a magnetic trap formed by the quadrupole magnetic field of the MOT. Over $10^8$ atoms at a density of $8 \times 10^9$ cm$^{-3}$ and temperature of 1 mK are trapped. The atom temperature is significantly lower than what would be expected from the kinetic and potential energy of atoms as they are transferred from the MOT. This suggests that thermalization and evaporative cooling are occurring in the magnetic trap.
Ashoka V. S.
Gupta Piyush
Killian Thomas C.
Laha Sibasish
Nagel S. B.
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