Speaker
Prof.
Adriana Predoi-Cross
(Department of Physics and Astronomy, University of Lethbridge, Lethbridge, AB, T1K 6R4 Canada)
Description
We have re-analyzed room-temperature spectra of first overtone band of CO and CO broadened by hydrogen. We have employed the Voigt, speed depended Voigt, Rautian, and Rautian with speed dependence line shape models and a multispectrum fit software [1].
The line mixing coefficients have been calculated using scaling laws. The CO line widths in CO-Hydrogen and CO-CO collisions were calculated using the classical impact theory [2] to determine the dipole absorption half-widths and exact 3D Hamilton equations to simulate molecular motion. We used Monte Carlo averaging over collision parameters and simple interaction potential (Tipping-Herman + electrostatic) [3-4] and assumed the molecules to be rigid rotors. The dependencies of CO half-widths on rotational quantum number J<24 are computed and compared with measured data at room temperature.
REFERENCES
1. D.C. Benner, C.P. Rinsland, V. Malathy Devi, M.A.H. Smith, D. Atkins, J. Quant. Spectrosc. Rad. Transfer 53(6) 705-721 (1995).
2. R.G. Gordon, J. Chem. Phys. 44, 3083-3089 (1966); ibid., 45, 1649-1655 (1966).
3. J.-P. Bouanich, A. Predoi-Cross, J. Molec Structure 742, 183-190 (2005).
4. A. Predoi-Cross, J.P. Bouanich, D. Chris Benner, A.D. May, J.R. Drummond, J. Chem. Phys. 113, 158-168 (2000).
Primary author
Prof.
Adriana Predoi-Cross
(Department of Physics and Astronomy, University of Lethbridge, Lethbridge, AB, T1K 6R4 Canada)
Co-authors
Prof.
Arlan Mantz
(Dept. of Physics, Astronomy and Geophysics, Connecticut College, New London, CT 06320, USA)
Mr
Hossein Naseri
(Department of Physics and Astronomy, University of Lethbridge, Lethbridge, AB, T1K 6R4 Canada)
Mr
Koorosh Esteki
(Department of Physics and Astronomy, University of Lethbridge, Lethbridge, AB, T1K 6R4 Canada)
Dr
Malathy Devi
(Department of Physics, The College of William and Mary, Williamsburg, VA 23187, USA;)
Dr
Mary Ann Smith
(Science Directorate, NASA Langley Research Center, Hampton, VA 23681, USA)
Dr
Sergey Ivanov
(Institute on Laser and Information Technologies, Russian Academy of Sciences (ILIT RAS), 2, Pionerskaya Str., 142190 Troitsk, Moscow, Russia)
