Abstract

The N₂O infrared spectrum from 900 to 4700 cm⁻¹ has been studied with a high-resolution Fourier-transform spectrometer. Measurements were made of line frequencies of several N₂O isotopes for several ground-state and hot bands. A few of these bands are being reported for the first time, to my knowledge: the 1530–0330, 2330–0330, 0441–0440, 0441–0330, 0531–0330, and 1331–0330 bands of ¹⁴N₂¹⁶O. Also for the first time to my knowledge, perturbation-enhanced transitions in the 0710–0110 and 0730–0110 bands were assigned and measured. The frequencies have been analyzed to obtain a unique set of effective vibration–rotation parameters for each vibrational state. The results obtained from this research are of high accuracy for the ground-state and the first-excited-state bands of ¹⁴N₂¹⁶O, in which the computed frequencies derived from the least-squares fits are known to an absolute uncertainty of only ±4 × 10⁻⁵ for nonperturbed transitions.

© 1991 Optical Society of America

N₂O vibration–rotation parameters derived from measurements in the 900–1090-and 1580–2380-cm⁻¹ regions

Robert A. Toth
J. Opt. Soc. Am. B 4(3) 357-374 (1987)

Line strengths (900–3600 cm⁻¹), self-broadened linewidths, and frequency shifts (1800–2360 cm⁻¹) of N₂O

Robert A. Toth
Appl. Opt. 32(36) 7326-7365 (1993)

Frequencies of N₂O in the 1100- to 1440-cm⁻¹ region

Robert A. Toth
J. Opt. Soc. Am. B 3(10) 1263-1281 (1986)

Line strengths of N₂O in the 1120–1440-cm⁻¹ region

Robert A. Toth
Appl. Opt. 23(11) 1825-1834 (1984)

Extensive measurements of H₂¹⁶O line frequencies and strengths: 5750 to 7965 cm⁻¹

Robert A. Toth
Appl. Opt. 33(21) 4851-4867 (1994)