Magnetic trapping of metastable $^3P_2$ atomic strontium

C. E. Simien; P. Gupta; S. B. Nagel; S. Laha; T. C. Killian; V. S. Ashoka

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Magnetic trapping of metastable $^3P_2$ atomic strontium

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arxiv physics/0212024 v1 pith:KUGAAEQQ submitted 2002-12-05 physics.atom-ph

S. B. Nagel , C. E. Simien , S. Laha , P. Gupta , V. S. Ashoka , T. C. Killian This is my paper · ORCID

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keywords magneticatomstrapatomicmetastablestrontiumtemperaturetrapping

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abstract

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.

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