N-loss photodissociation dynamics of N2O+(B2Π) near the NO+(1Σ+) + N(2P) dissociation limit

Photodissociation dynamics of the N2O+ cation in its B-2 state has been experimentally studied in an energy region around the NO+((1)sigma(+)) + N(P-2) dissociation limit using a cryogenic cylindrical ion trap velocity map imaging spectrometer. The results show that the NO+((1)sigma(+)) + N(D-2) product channel dominates the dissociation dynamics and requires the NNO angle to change by 30 degrees-50 degrees prior to dissociation. The NO+((1)sigma(+)) + N(P-2) product channel, which directly correlates with the B-2 state but less competitive, opens immediately when the photon energy reaches the dissociation limits, indicating a flat dissociation pathway without bending on the B-2 state surface.