Microwave Spectrum of a Silicon Monoxide Isotopomer 28Si 18O

Details Microwave Spectrum of a Silicon Monoxide Isotopomer 28Si 18O Microwave Spectrum of a Silicon Monoxide Isotopomer 28Si 18O

Mar 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998apj...496l..51c&link_type=abstract

Astrophysical Journal Letters v.496, p.L51

Astronomy and Astrophysics

Astronomy

5

Ism: Molecules, Molecular Data, Line: Identification

Scientific paper

The rotational transitions of 28Si18O in the ground vibrational state were observed by laboratory microwave spectroscopy for astronomical use. The SiO molecules were generated in a free-space absorption cell by dc-glow discharge in a mixture of tetra-methyl silane, Si(CH3)4, and 18O2. Ten rotational transitions were precisely measured in the 40-444 GHz region. The rotational and centrifugal distortion constants were determined by a least-squares analysis of measured line frequencies: B0=20176.4394 (43) and D0=0.025809 (32) MHz, with the 3 sigma deviations in parentheses.

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