Abstract

We deflected a well-collimated beam of krypton atoms in the metastable ls5 state by radiation pressure from a single-frequency dye laser. To produce the radiation pressure, we resonantly excited the krypton atoms, using the 1s5–2p9 transition. The natural width of this transition is much smaller than its isotope shift, which allowed us to deflect one isotope at a time. This created a new isotopically enriched atomic beam of Kr(1s5). We achieved a maximum enrichment factor of 1.2 × 104 at a deflection angle of 19 mrad. This enrichment is limited mainly by scattering of the parent atomic beam by residual gas. This degree of enrichment may make it possible to perform sensitive measurements of the concentrations of rare krypton isotopes in environmental samples.

© 1989 Optical Society of America

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