Continuum32+Doorways and theN15Giant Dipole Resonance

We attempt a two-particle, one-hole intermediate-structure interpretation of the ${}_{}{}^{15}{}_{}{}^{}\mathrm{N}$ giant dipole resonance located at 19.5-MeV excitation. A calculated doorway state at 19.1 MeV with a proton elastic escape width of 780 keV is associated with the observed ${\frac{3}{2}}^{+}$ resonance (${\Gamma }_p=1000\mathrm{}$ keV) in the giant-dipole-resonance region. The ($p, {\gamma }_0$) resonance cross section calculated for this state is in good agreement with experiment.