The NO vibrational state distribution in the reaction O( )+N2O → 2NO

Crossed molecular beam studies on the reaction dynamics of O(D1)+N2O

“…4 and 6, we can calculate the average kinetic energy release ͗E T ͘ and the translational fraction of the available energy, f T = ͗E T ͘ / E avl . Pisano et al 13 measured the NO vibrational distribution using a REMPI method in a single molecular beam. Table I summarizes the product energy partitioning of ͑R1͒ and ͑R2͒.…”

“…The exothermicity of ͑R1͒ corresponds to 17 quanta of NO vibrational energy. While most cell experiments show that the total NO vibrational distribution is peaked near = 0, the Houston group 13 reported that the distribution is peaked at = 7. The internal state-resolved translational energy distribution was analyzed from the Doppler profiles.…”

“…There is considerable experimental [1][2][3][4][5][6][7][8][9][10][11][12][13] and theoretical [14][15][16][17][18][19][20][21][22][23][24][25] attention on the reaction dynamics of O͑ 1 D͒ +N 2 O. The reaction has two major product channels which are highly exothermic: Both channels are fast ͑close to the gas kinetic limit͒ and without potential energy barriers.…”

“…Early studies by the Simons group [3][4][5] investigated ͑R1͒ by LIF technique, especially Doppler-resolved, polarized LIF probing of NO products from velocity aligned O͑ 1 D͒ reactant 4,5 in cell conditions. 13 There are several ab initio calculations on the potential energy surface ͑PES͒ of ͑R1͒ and ͑R2͒. They concluded that besides a complex mechanism producing intermediate NO vibrational levels ͑ =1-15͒, a substantial fraction of ͑R1͒ undergoes a stripping mechanism.…”

On the ultraviolet absorption of nitrous oxide and its van der Waals complexes

“…First, its dimer was one of the first van der Waals complexes investigated in a supersonic jet expansion [5], and second, it has widely been used as precursor molecule for O( 1 D) atoms, in particular for investigating the bimolecular reaction (1) which can be initiated with relative experimental ease by 193 nm laser radiation in a N 2 O sample [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20]. Frequently, such experiments are performed in supersonic expansions where low temperature and high number density favor the formation of N 2 O van der Waals complexes which are likely to affect the course of the reaction [7,8,19,20].…”