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Magneto-Optical Trapping of Chromium Atoms



C Bradley, Jabez J. McClelland, W Anderson, Robert Celotta


We have constructed a magneto-optical trap for chromium atoms. Using trapping light at 425 nm and two repumping lasers tuned to intercombination transitions, over 106 atoms were trapped and average densities of over 1016 m-3 were obtained. Non-exponential loss of atoms is observed at high densities indicating inelastic collisions between trapped atoms. Over a range of trapping conditions, the density-dependent trap loss rate constant β is extracted from fluorescence decay curves and found to have values in the range of 10-15m3s-1,much larger than is observed in alkali traps.
Physical Review A (Atomic, Molecular and Optical Physics)


atom trapping, chromium, cold collisions, laser cooling, magneto-optic trap, MOT


Bradley, C. , McClelland, J. , Anderson, W. and Celotta, R. (2000), Magneto-Optical Trapping of Chromium Atoms, Physical Review A (Atomic, Molecular and Optical Physics), [online], (Accessed June 15, 2024)


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Created April 30, 2000, Updated October 12, 2021