A study of the reaction 28Si(p,γ)29P

The reaction 28Si(p, γ)29P has been studied for 7<Esub(p)<24 MeV, viz. 10<Esub(x)<26 MeV, using a large NaI spectrometer. The transitions γ0, γ1, and γ5 are observed to be the strongest. From the (p, γ0) yield curve, five new T=3/2 levels in 29P have been postulated for 9.7<Esub(x)<13.6 MeV. The giant dipole resonance observed via 28Si(p, γ0)29P is found to be centred at Esub(x)=18 MeV with a width GAMMA=5 MeV, and exhibits much structure. The (p, γ1) and (p, γ5) yield curves also exhibit much structure and their giant dipole resonances are observed at Esub(x)=20 and 22 MeV, respectively. Angular distributions measured throughout the giant-resonance region indicate Jsup(π)=3-/2 for the GDR and yield a lower limit of 3% for the E2/E1 intensity. (orig.)