Production of translationally cold barium monohalide ions
Abstract
We have produced sympathetically cooled barium monohalide ions BaX+ (X = F, Cl, Br) by reacting trapped, laser cooled Ba+ ions with room temperature gas phase neutral halogen-containing molecules. Reaction rates for two of these (SF6 and CH3Cl) have been measured and are in agreement with classical models. BaX+ ions are promising candidates for cooling to the rovibrational ground state, and our method presents a straightforward way to produce these polar molecular ions.
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