Absolute frequency measurements of the 00 02-00 00, 20 01-00 00, and 12 01-00 00 bands of N 2O by heterodyne spectroscopy
Abstract
The absolute frequencies of 39 lines in the 00 02-00 00, 20 01-00 00, and 12 01-00 00 bands of N 2O in the range 4300-4800 cm -1 have been measured by heterodyne frequency techniques. The lines were each measured in Doppler-limited absorption, with a color-center laser as a tunable probe of the N 2O and two stabilized CO 2 lasers as reference frequencies. New rovibrational constants have been fitted to these measurements. Tables of calculated transition frequencies are given, with estimated absolute uncertainties as small as 10 -4 cm -1. The pressure shifts of four lines have been measured, and the values fall within the range of 0 to -2 MHz/kPa (0 to -0.2 MHz/Torr).
- Publication:
-
Journal of Molecular Spectroscopy
- Pub Date:
- September 1984
- DOI:
- 10.1016/0022-2852(84)90265-0
- Bibcode:
- 1984JMoSp.107...62P