Laboratory detection of vibration-rotation transitions of 12CH+ and 13CH+ and improved measurement of their rotational transition frequencies
Doménech, José Luis
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https://hdl.handle.net/2142/100497
Description
Title
Laboratory detection of vibration-rotation transitions of 12CH+ and 13CH+ and improved measurement of their rotational transition frequencies
Author(s)
Doménech, José Luis
Contributor(s)
Asvany, Oskar
Schlemmer, Stephan
Jusko, Pavol
Issue Date
2018-06-19
Keyword(s)
Astronomy
Abstract
The elusive C-H vibration-rotation transitions of the fundamental ions 12CH+ and 13CH+ have been observed for the first time in the laboratory. The technique of state-dependent attachment of He atoms to these ions in a cryogenic trapb has been used to obtain high-resolution rovibrational data. The excitation source is an IR OPO whose frequency is measured using a frequency comb. In addition, the lowest frequency rotational transitions of 12CH+, 13CH+ and 12CD+ have been revisitedc,d,e using a synthesizer and a multiplier chain with the same ion trap, leading to a significant improvement of their rest frequency values.
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