Intermediate Structure in the Energy Dependence of Nuclear Cross Sections

The spectrum of excitations for real nuclei

“…Again, restricting our attention to quasi-particle states, we proceed as follows. 1) Make a guess for the energies in (26)·and (27). The H-F energies <i associated .. with the ui provide a starting point.…”

“…Equation (27) is to be understood as applying when expressions have an unsymmetrical appearance, the probability-ofoccupation factors f of (26) being absent in (27). This is tantamount system and single particles in the (N+1)-system, persist up to excitations of perhaps 3-5 MeV.…”

The Spectrum of Excitations for Real Nuclei

“…(26) and (27), and an eigenvalue statement such as is given in (23). The approximation is made that the occupation factors f are unity.…”

“…The H-F energies <i associated .. with the ui provide a starting point. 2) Compute the matrix elements of t, diagonal and non-diagonal, from (27),in the u.-basis. Use the We have yet to discuss the quasi-particle damping which is associated with the excitations of the (N+1) -system.…”

“…Equation (26) results from the assumption that we will compute the self-energy from the diagrams of fig expressions have an unsymmetrical appearance, the probability-ofoccupation factors f of (26) being absent in (27). This is tantamount system and single particles in the (N+1)-system, persist up to excitations of perhaps 3-5 MeV.…”