High-pressure absorption spectra of the CO/sub 2/ 10. 6- and 9. 4-. mu. m laser bands
Journal Article
·
· J. Appl. Phys.; (United States)
A density matrix formulation of the interaction of radiation with bands of pressure-broadened overlapping spectral lines is described which includes the effects of interaction between neighboring lines due to collisions. A measurement of the abosrption coefficients at the centers of several lines of the 10.6- and 9.4-..mu..m bands of CO/sub 2/ for CO/sub 2/ and mixtures of CO/sub 2/ and N/sub 2/ and He at absolute pressures to 18 atm is reported. The calculated spectra of these bands are given for the two limiting forms of overlapping line theory: one which maximizes line interaction and another which neglects it, calculating the spectra as sums of Lorentzian-shaped lines. The data are shown to be in good agreement with the theory which maximizes the line interaction.
- Research Organization:
- Department of Electrical Engineering and Computer Science and Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
- OSTI ID:
- 7094239
- Journal Information:
- J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 49:6; ISSN JAPIA
- Country of Publication:
- United States
- Language:
- English
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