Observation of Chemical Reactions between a Trapped Ion and Ultracold Feshbach Dimers
PHYSICAL REVIEW LETTERS(2022)
摘要
We measure chemical reactions between a single trapped 174Yb+ ion and ultracold Li2 dimers. This produces LiYb+ molecular ions that we detect via mass spectrometry. We explain the reaction rates by modeling the dimer density as a function of the magnetic field and obtain excellent agreement when we assume the reaction to follow the Langevin rate. Our results present a novel approach towards the creation of cold molecular ions and point to the exploration of ultracold chemistry in ion molecule collisions. What is more, with a detection sensitivity below molecule densities of 1014 m-3, we provide a new method to detect low-density molecular gases.
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关键词
chemical reactions,trapped observation
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