Quasiclassical trajectory calculations
are performed for hyperthermal
collisions between NO(X2Π) and O(3P) on
recently developed potential energy surfaces for the lowest doublet
and quartet states of the NO2 system. Three product channels
are investigated, and their branching fractions are in reasonably
good agreement with the recent crossed molecular beam study at 84
kcal/mol of collision energy. The dominant inelastic channel has a
strong forward scattering bias and a high translational energy distribution
with limited internal excitation in the scattered NO. The exchange
channel has significantly higher NO internal excitation and is also
forward biased. The abstraction channel producing internally excited
O2 has the smallest branching fraction and a broader angular
distribution also with a forward peak. The angular and translational
energy distributions in the three channels are consistent with experiment,
but the agreement is not always quantitative. The sources of the differences
are discussed. Finally, the impact of NO vibrational excitation on
the reactive channels and the corresponding rate coefficients are
reported.