The long-searched C-H stretches of the fundamental ions CH and CH have been observed for the first time in the laboratory. For this, the state-dependent attachment of He atoms to these ions at cryogenic temperatures has been exploited to obtain high-resolution rovibrational data. In addition, the lowest rotational transitions of CH, CH and CD have been revisited and their rest frequency values improved substantially.
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| http://dx.doi.org/10.3847/1538-4357/aab36a | DOI Listing |
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