Rovibronic spectrum of N2O+ ion at the A2 Sigma(+) state

The rotational structures of the photofragment excitation spectrum of N2O+ (A(2)Sigma(+)) at high vibrational levels have been studied experimentally. The parent N2O+ ((XII)-I-2) ions were prepared by (3 + 1) resonance-enhanced multiphoton ionization of jet-cooled N2O molecules by 360.55 nm laser beam,and were excited by another laser to the predissociative A(2)Sigma(+) state in the range of 280-320 nm. Two types of rotational transition, i. e., (2)Sigma(+) <-(2) II and (2) II <-(2) II, have been clearly observed for a series of vibronic transitions. The rotational constants and spin splitting constants have been obtained from the spectral analysis.