High resolution analysis of three bands of the electronic transition A2Σ+-X2Π of N2O+ radical: 100-000, 000-001, and 001-001

In this article three vibrational bands of the electronic transition A2Σ+-X2Π of the N2O+ radical (100-000, 000-001, and 001-001) are analysed through high resolution Fourier transform spectroscopy. The N2O+ radical was produced by Penning ionization of N2O by colliding with metastable atoms of He(23S) in a reaction chamber. The spectra was recorded in a spectral range of 24 500–30 000 cm−1 and obtained from 200 coadded interferograms recorded at an apodized resolution of 0.08 cm−1. Through a recursive way, the wavenumbers of the correspondent rotational transitions were reduced into molecular constants, improving the values previously reported. New values for the first vibrational energies ν1′, ν3″, and ν3′ are also obtained and compared with previous values reported in the literature