Unified description of the coupled-channels and statistical Hauser-Feshbach nuclear reaction theories for low energy neutron incident reactions

We incorporate the coupled-channels optical model into the statistical Hauser-Feshbach nuclear reaction theory, where the scattering matrix is diagonalized by performing the Engelbrecht-Weidenmuller transformation. This technique has been implemented in the coupled-channels optical model code ECIS by J. Raynal, and we extend this method so that all the open channels in a nucleon-induced reaction on a deformed nucleus can be calculated consistently.

Automated summary

The study combines the coupled-channels optical model with the statistical Hauser-Feshbach nuclear reaction theory, diagonalizing the scattering matrix through the Engelbrecht-Weidenmuller transformation to consistently calculate all open channels in a nucleon-induced reaction on a deformed nucleus.