Velocity mapping conclusions

The veloeity and angular distributions of NO produced by UV photolysis of nitrosobenzene have been determined by velocity-map ion imaging. With light of A = 290.5 (S2 state) and 226 nm (5n (n > 3) states), completely isotropic velocity distributions were observed, leading to the conclusion that photodissodation occurs on a timescale much slower than rotation of the parent molecule, and after redistribution of the excess energy into the vibrational modes. 

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