For the compound nucleus formed when a neutron is captured on
PHYSICS · Multi-part · Fermi University Physics · Nuclear Physics · The nuclear force and nuclear models · Fission, fusion and nuclear energy
The Nucleus Resolved, Ch Fission: the double-humped barrier and the shells the drop cannot see
Problem
For the compound nucleus formed when a neutron is captured on 237Np, the liquid-drop deformation energy and the Strutinsky shell-plus-pairing correction have been computed separately at five deformations. Data in MeV, as β2: ELDM, δUshell+δPpair: 0: 0, +2.1; 0.25: 1.0, −2.9; 0.45: 3.0, +0.9; 0.60: 3.7, −2.7; 0.80: 4.4, −0.8.
((a)) Add the two rows at each deformation and identify the deformed ground state.
((b)) Give the inner barrier height EA, the second-minimum excitation energy, and the outer barrier height EB, all measured from the ground state.