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A neon atomic beam in the 1s5 (J=2) metastable level is cooled by a counterpropagating laser beam using 1s5-2p9 transition. By transferring the 1s5 population to the 1s3 (J=0) metastable level using the optical pumping through 2p2, a cooled 1s3 beam is also generated.
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Shimizu et al. (1987) studied this question.
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