The J = 1-0 Transitions of 12CH+, 13CH+, and 12CD+

Details The J = 1-0 Transitions of 12CH+, 13CH+, and 12CD+ The J = 1-0 Transitions of 12CH+, 13CH+, and 12CD+

Jun 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010apj...716l...1a&link_type=abstract

The Astrophysical Journal Letters, Volume 716, Issue 1, pp. L1-L3 (2010).

Astronomy and Astrophysics

Astronomy

11

Ism: Molecules, Methods: Laboratory, Molecular Data, Submillimeter: General

Scientific paper

A new set of laboratory experimental frequencies for the J = 1-0 rotational transition of 12CH+, 13CH+, and 12CD+ are obtained by using a liquid nitrogen cooled extended negative glow discharge in a gas mixture of CH4 and He. These frequencies are found to be significantly different from those reported previously. The unexpectedly large Zeeman effect and the spin-rotation hyperfine interaction for a 1Σ molecule are observed. The Zeeman effect and the hyperfine interaction appear to be distinctively different for each isotopic species. Theoretical considerations reveal the isotopic dependence of the magnitudes of these effects, and they also provide strong evidence for the identifications.

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