Laser cooling of neutral and positively charged ions is well mastered, but cooling of anions remains largely unexplored. Now, laser-induced evaporative cooling of negatively charged molecules has been achieved.
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Comparat, D., Lignier, H. Anions get cold. Nat. Phys. 19, 1225–1226 (2023). https://doi.org/10.1038/s41567-023-02085-5
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DOI: https://doi.org/10.1038/s41567-023-02085-5
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