Measurement of three-body recombination coefficient of ultracold lithium and strontium atoms

2024/04/01 by Boyang Wang, Wang, Bo-Yang, Yifan Wang +11
Chemistry · Materials Science · Physics and Astronomy · #Atomic and Molecular Physics #Atomic physics #Biology #Chemistry #Lithium (medication) #Luminescence Properties of Advanced Materials #Materials science #Nuclear physics #Physics #Radioactive element chemistry and processing #Recombination #Strontium

paper · pdf · doi:10.48550/arxiv.2404.01098

published in arXiv (Cornell University) (Cornell University)

openalex publication_date 2024/04/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We report on the observation of a conspicuous loss in an ultracold mixture of ⁷Li and ⁸⁸Sr atoms confined in a far-off-resonance optical dipole trap. We attribute the trap loss to the three-body inelastic Li-Sr-Sr collision and extract the corresponding three-body recombination coefficient K₃ at T∼ 18.5,45,70,600 μK. The measured three-body recombination coefficient is about two to three orders of magnitude larger than the typical values convenient for realizing quantum degenerate gases. It also indicates a potentially large s-wave scattering length between the bosonic ⁷Li and ⁸⁸Sr atoms, and essentially rules out the prospect of realizing ⁷Li and ⁸⁸Sr mixtures of high phase space density.

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