A high-resolution FTIR-spectroscopic study of HI gas:
band analysis and the dipolar moment function
A. Domanskaya1*, M. Bulanin1, K. Kerl2
1V. A. Fock Institute of Physics, St. Petersburg University, Peterhof, 198504 St. Petersburg, Russia
2Institut für Physikalische und Theoretische Chemie, D-38106 Braunschweig, Germany
* Corresponding author. E-mail: email@example.com
Received: 15 October 2003; revised version accepted: 02 November 2004
New high-resolution experimental data are reported on the linestrengths and self-pressure-broadened Lorentzian widths for the P1(1)-P1(10), R1(0)-R1(15), and P2(13)- R2(12) vibration-rotation lines in the fundamental and the first overtone absorption bands of HI. An improved dipole moment expansion as a function of the reduced nuclear displacement is generated and compared with the available ab initio calculations. A new set of the Herman - Wallis coefficients is obtained, which is in a better agreement with theory than previously published results.
Keywords: Diatomic molecules; Linestrengths; Dipole moment function; Pressure broadening; Hyperfine structure.