Effects of direct reaction coupling in compound reactionsT. Kawano1, L. Bonneau1 and A.K. Kerman2
1 Los Alamos National Laboratory, Los Alamos, NM 87545, USA
2 Massachusetts Institute of Technology, Cambridge, MA 02139, USA
Published online: 21 May 2008
The Hauser-Feshbach (HF) model with width fluctuation correction needs to be modified when strongly coupled direct reaction channels exist. We perform cross section calculations for compound reactions which include strongly coupled channels (direct), based on the Kawai-Kerman-McVoy (KKM) theory. In KKM the cross sections are expressed in terms of channel matrix, which is given by the coupled-channels method. Numerical calculations are given for the 238U elastic scattering cross sections, and the elastic enhancement factor. It is shown that the compound elastic cross sections are affected by the direct channels when the coupling is strong.
© CEA 2008