Linestrength Measurements for N2O around 4 μm: Σ ← Σ Transitions in Four Isotopic Species (2400-2600 cm−1)

Abstract

Linestrengths have been measured for 12 bands of N2O using a Fourier transform spectrometer, with an effective response function width of about 5 × 10−3 cm−1. The observed bands for 14N216O are the cold bands ν1 + 2ν2 and 2ν1 and their associated hot bands starting from the 0200 or 1000 levels. Transitions starting from the 0000 level have also been measured for the minor isotopic species 14N218O 15N14N16O, and 14N15N16O. Measurements have been carried out with a relative accuracy better than 2%. Analysis of the results yields the squared vibrational transition dipole moment and the parameters describing the vibration-rotation interaction effects.