Quantitative absorption and fluorescence study of CO from 1060 to 1550 A
Abstract
Measurement of the photoabsorption cross section of CO in the 1060-1550 A region using synchrotron radiation is described. The oscillator strengths for the transitions from CO (Chi1Sigma+ to various excited states are obtained from these data. Fluorescence from excited CO was observed in the 1150 to 3000 A and 3000 to 8000 A regions. The quantum yields for the production of fluroescence from the Alpha(1)P and B(1)Sigma(+) states are unity because their excitation energies are below the dissociation limit. The C(1)Sigma(+) , v = O level has significant fluorescence quantum yields both in the UV and visible region, but the yields for the E(1)Pi, v = O and C(1)Sigma(+), v = 1 levels are very small. The C(1)Sigma(+), v = 1 level is presumably predissociated. The cross sections for the production of fluroescence from the a'(3)Sigma(+), d(3)Delta sub 1, e(3)Sigma(-) yields a(3)Pi, and B(1)Sigma(+), C(1)Sigma(+) yields A(1)Pi transitions upon excitation from the X(1)Sigma(+) were measured.
- Publication:
-
Unknown
- Pub Date:
- June 1980
- Bibcode:
- 1980qafs.rept.....L
- Keywords:
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- Carbon Monoxide;
- Fluorescence;
- Ionization Cross Sections;
- Photoabsorption;
- Electron States;
- Electron Transitions;
- Molecular Excitation;
- Synchrotron Radiation;
- Atomic and Molecular Physics