The unimolecular dissociation of HCO. IV. Variational calculation of Siegert states.

Presents a variational method for calculating complex resonance states in unimolecular dissociation reactions. Basis of the approach on the log-derivative version of the Kohn variational principle; Formulation of the basic matrix equations in terms of scattering-wave boundary conditions yielding the resonance states as homogenous solutions for singular energies.