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Review of Scientific Instruments

Selective removal of either metastable species from a mixed 3P0,2 rare-gas metastable beam

F. B. Dunning, T. B. Cook, W.P. West, R. F. Stebbings

Published Aug 1, 1975• 60 citations
Publisher

Abstract

A tunable cw laser has been used to selectively remove either of the two metastable species, 3P0,2, which are initially present in a neon metastable beam. The method is applicable to other rare gases and provides the opportunity for separate investigation of effects due to atoms in either the 3P0 or 3P2 state.
DOI
10.1063/1.1134403

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We have devised a simple new scheme to increase the isotopic selectivity in optical rare-isotope detection experiments. We can effectively remove interfering isotopes from an atomic beam by optically pumping them into a state that is invisible to the optical detection system. The selectivity of this resonant depletion scales exponentially with the isotope shift and yields almost unlimited selectivity in principle. We have demonstrated a selectivity of 2.3 x 10(5) with a single laser excitation in a beam of metastable krypton atoms. With better laser stability we may be able to improve the selectivity much further.