Accurate Spectroscopic Constants of Nitrogen Determined from Stimulated Raman Spectra of the Fundamental and 1st Hot Bands

0377-0486; Nitrogen specta of the Q-branch of the fundamental and the first hot bands were recorded with a high-resolution stimulated Raman spectrometer at atmospheric pressure and ca. 1300 K. The absolute frequencies of the Raman lines were measured with high accuracy, leading to a refinement of spectroscopic constants. A temperature estimation was also performed from the Raman intensities.