Analytical formulas are proposed for the coefficients that determine broadening of vibrational-rotational absorption lines of diatomic and linear molecules in the case when the broadening is caused by the pressure of buffer gases or linear molecules. The formulas are obtained by the parameterization of the semiclassical method relations with allowance for the predominant contribution related to polarization or dipole-quadrupole interaction. The parameters of the analytical formulas are determined for different vibrational bands of HCl and HF molecules in the case of argon, nitrogen, and air broadening, as well as for CO and CO2 molecules in the case of broadening by collisions with CO, CO2, N2, O2, and H2O.
|Number of pages||12|
|Journal||Optics and Spectroscopy (English translation of Optika i Spektroskopiya)|
|Publication status||Published - Feb 2011|
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics