Laboratory detection of the C3N an C4H free radicals

Details Laboratory detection of the C3N an C4H free radicals Laboratory detection of the C3N an C4H free radicals

Dec 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...275..916g&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 275, Dec. 15, 1983, p. 916-921.

Astronomy and Astrophysics

Astrophysics

57

Carbon Compounds, Free Radicals, Interstellar Matter, Microwave Spectra, Butadiene, Cyano Compounds, Cyanoacetylene, Electron Transitions, Gas Discharges, Glow Discharges, Line Spectra, Millimeter Waves, Zeeman Effect

Scientific paper

The millimeter-wave spectra of the linear carbon chain free radicals C3N and C4H, first identified in IRC + 10216 and hitherto observed only in a few astronomical sources, have been detected with a Zeeman-modulated spectrometer in laboratory glow discharges through low pressure flowing mixtures of N2 + HC3N and He + HCCH, respectively. Four successive rotational transitions between 168 and 198 GHz have been measured for C3N, and five rotational transitions between 143 and 200 GHz for C4H; each is a well-resolved spin doublet owing to the unpaired electron present in both species. Precise values for the rotational, centrifugal distortion, and spin doubling constants have been obtained, which, with hyperfine constants derived from observations of the lower rotational transitions in the astronomical source TMC 1, allow all the rotational transitions of C3N and C4H at frequencies less than 300 GHz to be calculated to an absolute accuracy exceeding 1 ppm.

Affiliated with

Also associated with

No associations

Rating

Laboratory detection of the C3N an C4H free radicals does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Laboratory detection of the C3N an C4H free radicals, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Laboratory detection of the C3N an C4H free radicals will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1802676