Naslov
New High-Resolution Analysis of the nu_1 + nu_3 Band of the ^15N^16O_2 Isotopomer of Nitrogen Dioxide: Line Positions and Intensities

Autori
Miljanić, Snežana ; Perrin, Agnes ; Orphal, Johannes

Izvornik
Journal of Molecular Spectroscopy (0022-2852) 242 (2007), 2; 176-181

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
^15N^16O_2; nitrogen dioxide; high-resolution Fourier transform infrared spectrum; electron spin-rotation resonance; Coriolis resonance; line position; line intensity

Sažetak
The high-resolution Fourier transform absorption spectrum of an isotopic sample of nitrogen dioxide, ^15N^16O_2, was recorded in the 3.4 mum region. Starting from the results of a previous study [Y. Hamada, J. Mol. Struct. 242 (1991) 367-377] a new analysis of the nu_1 + nu_3 band located at 2858.7077 cm_-1 has been performed. This new assignment concerns (101) energy levels involving rotational quantum numbers up to K_a = 10 and N = 54. Using a theoretical model which accounts for both the electron spin-rotation resonances within each vibrational state and the Coriolis interactions between the (120) and (101) vibrational states, the spin-rotation energy levels of the (101) vibrational state could be reproduced within their experimental uncertainty. In this way, the precise vibrational energy, rotational, spin-rotation, and coupling constants were achieved for the {; ; (120), (101)}; ; interacting states of ^15N^16O_2. Using these parameters and the transition moment operator which was obtained for the main isotopic species, ^14N^16O_2, a comprehensive list of the line positions and intensities was generated for the nu_1 + nu_3 band of ^15N^16O_2.

Izvorni jezik
Engleski

Znanstvena područja
Fizika, Kemija

POVEZANOST RADA