Production of translationally cold barium monohalide ions

@article{Depalatis2013ProductionOT,
  title={Production of translationally cold barium monohalide ions},
  author={Michael V. Depalatis and Michael S. Chapman},
  journal={Physical Review A},
  year={2013},
  volume={88},
  pages={023403}
}
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 (SF$_6$ and CH$_3$Cl) 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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