IUPAC definition : regions of potential-energy surfaces where there are valleys are sometimes referred
to as arrangement channels. the reactant channel or entrance channel is that corresponding
to configurations similar to those of the reactants; the product channel or exit channel
relates to configurations similar to those of the products. in collision theory, the
specification of a complete set of quantum numbers in a given arrangement channel
is called a channel.;
regions of potential-energy surfaces where there are valleys are sometimes referred
to as arrangement channels. the reactant channel or entrance channel is that corresponding
to configurations similar to those of the reactants; the product channel or exit channel
relates to configurations similar to those of the products. in collision theory, the
specification of a complete set of quantum numbers in a given arrangement channel
is called a channel.