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Updated: Apr 28, 2026

Measurement of Ultrafast Vibrational Coherences in Polyatomic Radical Cations with Strong-Field Adiabatic Ionization
Published on: August 6, 2018
High resolution analysis of three bands of the electronic transition A²Σ⁺-X²Π of N₂O⁺ radical: 100-000, 000-001, and
L L Lessa1, S D de Cândido1, C E Fellows1
1Departamento de Física, Instituto de Ciências Exatas - ICEx, Universidade Federal Fluminense, Campus do Aterrado, Volta Redonda, RJ 27213-415, Brazil.
Abstract:
In this article three vibrational bands of the electronic transition A(2)Σ(+)-X(2)Π 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(2(3)S) 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.
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