Observation of Giant Particle-Hole Resonances inZr90(p, n)Nb90

Abstract
Neutron spectra from Zr90(p, n)Nb90 at Ep=120 MeV are measured in the angular range 0°-25°. Three giant resonances are seen and are interpreted as the T=4 and T=5 components of the Gamow-Teller strength and an E1 resonance. Gamow-Teller matrix elements are extracted, and a large part of the expected strength is found.