Abstract

The near-infrared absorption spectrum of 14NH3 covering the 6400-6900 cm−1 region has been obtained at a resolution of 0.005 cm−1 using a Fourier transform spectrometer. The spectrum is very complex, with many squeezed or blended lines which cannot be resolved even by Doppler-limited spectroscopy. A total of 1710 lines have been observed, and 381 rotational-vibrational transitions have been assigned to the combination band v1 + v3 and the overtone band 2v3.

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