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Detection of the millimeter wave spectra of the weakly bound complexes 3He–CO and 4He–CO

Authors :
Daniel Roth
Frank Lewen
Gisbert Winnewisser
Leonid A Surin
Boris S. Dumesh
I. Pak
Source :
The Journal of Chemical Physics. 112:4064-4068
Publication Year :
2000
Publisher :
AIP Publishing, 2000.

Abstract

For the first time, millimeter wave absorption spectra of the van der Waals complexes 3He–CO and 4He–CO were detected in a supersonic jet. Altogether four rotational transitions of 3He–CO and six rotational transitions of 4He–CO were recorded between 110 GHz and 127 GHz with an intracavity spectrometer based on the millimeter wave generator, called OROTRON. The obtained results were included in a global fit together with previously known data enabling a more precise determination of the energy levels of the 3He–CO and 4He–CO complexes. In extremely cold, dark, and dense interstellar clouds the He–CO complex may have astrophysical relevance.

Details

ISSN :
10897690 and 00219606
Volume :
112
Database :
OpenAIRE
Journal :
The Journal of Chemical Physics
Accession number :
edsair.doi...........260854f784c6363e1471cea7e448aa8e