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arXiv · 1802.10032

First laboratory detection of vibration-rotation transitions of CH$^+$ and $^{13}$CH$^+$ and improved measurement of their rotational transition frequencies

José L. Doménech·Pavol Jusko·Stephan Schlemmer·Oskar Asvany
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Abstract

The long-searched C-H stretches of the fundamental ions CH$^+$ and $^{13}$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$^+$, $^{13}$CH$^+$ and CD$^+$ have been revisited and their rest frequency values improved substantially.

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José L. Doménech, Pavol Jusko, Stephan Schlemmer, Oskar Asvany. 2018-02-27. First laboratory detection of vibration-rotation transitions of CH$^+$ and $^{13}$CH$^+$ and improved measurement of their rotational transition frequencies. https://doi.org/10.3847/1538-4357/aab36a

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