We demonstrate an approach for producing a high flux beam of ⁷Li⁴He dimers by performing post-nozzle seeding of a lithium beam into a supersonic helium expansion. The molecular beam has a transverse temperature of 11(4) mK and a continuous flux on the order of 10¹¹ dimers/s. By simulating molecular formation in the jet, we find quantitative agreement with the measured dimer flux using ab-initio quantum scattering theory for three-body processes. Extensions of this work could lead towards a more quantitative understanding of other few-body collision processes of alkali and helium atoms.
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Glick et al. (2024) studied this question.
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