Note on the electric quadrupole absorption in the nuclear photo-reaction

摘要: The behavior of the EQ absorption cross section in « Giant resonance » region is discussed through analysis angular distributions emitted particles by using direct interaction model. difference between proton’s and neutron’s attributed to effective charges proton neutron for radiation. excitation functions are computed for40A(γp)39Cl and59Co(γ p)58Fe. It pointed out that integrated sections favorable explain feature curves have a peak near maximum energy ». agreement our results experiments above reactions good part. On whole, however, ratio ED too small comparison required from experiments. this model closely direction modification also indicated.