High-Resolution Absorption Cross Section Measurements of Supersonic Jet-cooled Carbon Monoxide between 92.5 and 97.4 Nanometers
Abstract
High-resolution photoabsorption cross sections for eight CO bands, at wavelengths between 92.5 nm and 97.4 nm, have been measured in a supersonic jet-cooled source (approximately equals 20 K) at the Photon Factory synchrotron radiation facility. New integrated cross sections are reported for four bands between 92.5 nm and 94.2 nm. A low-temperature spectrum of the W(1)-X(0) band (95.6 nm), which was used to determine the absorbing CO column densities, is also presented. Additional jet-cooled cross section measurements were made on the L(0)-X(0), K(0)-X(0), and W(0)-X(0) bands (96.7-97.4 nm) which verify previously published results. A self-consistent set of band oscillator strengths is presented for the eight bands studied.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- January 1995
- DOI:
- 10.1086/175142
- Bibcode:
- 1995ApJ...438.1013Y
- Keywords:
-
- Absorption Cross Sections;
- Absorption Spectra;
- Carbon Monoxide;
- Cooling;
- Interstellar Matter;
- Molecular Clouds;
- Photochemical Reactions;
- Supersonic Jet Flow;
- Far Ultraviolet Radiation;
- Photodissociation;
- Spectrum Analysis;
- Ultraviolet Spectroscopy;
- Astrophysics;
- MOLECULAR DATA;
- TECHNIQUES: SPECTROSCOPIC;
- ULTRAVIOLET: GENERAL