Desorption dynamics in N2O decomposition on Pd(110)

Abstract The decomposition of N 2 O was studied on Pd(110) through analysis of the angular and velocity distributions of desorbing products by means of angle-resolved thermal desorption combined with time-of-flight techniques. Both desorption and decomposition of N 2 O(a) were completed below 170 K, simultaneously emitting N 2 . N 2 showed two desorption peaks, β 1 -N 2 at 152 K and β 2 -N 2 at 134–140 K. The former revealed an inclined emission at ±43° off the normal in a plane along the (001) direction and a hyper-thermal translational energy, whereas the latter showed a cosine angular distribution without an excess translational energy. Different desorption channels were proposed to yield these desorption.