Excitation of the giant dipole resonance in the scattering of isoscalar projectiles

Abstract

The excitation of the giant dipole resonance in nuclei with N > Z by isoscalar projectiles α and d is discussed within a simple collective model for isoscalar dipole excitations. Calculations have been performed for 208Pb; they are compared to recent data on the excitation of the new giant resonance at E x = 13.8 MeV. For α scattering the effect of dipole excitation is quite weak but significant contributions are obtained for d scattering.