Classical photodissociation dynamics with Bohr quantization

The standard classical expression of the state-resolved photodissociation cross section is not consistent with an efficient Bohr quantization of product internal motions. A new and strictly equivalent expression not suffering from this drawback is proposed. This expression opens the way to more realistic classical simulations of direct polyatomic photodissociations in the quantum regime where only a few states are available to the products. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3502492]