Abstract
The N 2O + molecular ion is studied by laser-induced fragmentation in a mass-selected beam of ions employing a frequency-doubled pulsed dye laser operating at a resolution up to λ/Δλ=400000. Spectra in the wavelength range between 317.5 and 328.5 nm are presented which give new information about highly excited vibrational levels of the A 2Σ + state. The rotational structure of the A 2Σ +(2,0,0)-X 2Π(0,0,0) transition was observed with high resolution and analyzed by means of calculations. Molecular constants are determined with good accuracy.
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