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Acid dissociation and subsequent solvation of its charged fragments, including the hydrated proton, is one of the most fundamental chemical processes. In contrast to ambient bulk water environments, understanding mechanisms that allow for ionization in small networks at ultracold conditions are relevant from atmospheric to interstellar chemistry, but remain largely unexplored. We report the first experimental observation of a microscopic aqueous droplet of acid reported at ultracold (0.37~K) temperatures well as discuss specific aggregation mechanism for cluster at ultracold temperatures. |
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