Identification of a 3+ state in16O and evidence for a (1f 7/2 1p 1 2/?1 ) component in its wave function

Abstract

Excitation functions and angular distributions for the elastic scattering of protons on15N and the reactions15N(p, α 0)12C and15N(p,α 1)12C* were measured in the proton energy range of 2.50−5.14 MeV (E x (16O)=14.47−16.94 MeV). Besides known resonances two new ones were found at 16.46 and 16.82MeV. For the latterJ ⋆=3+ is assigned using the compound nucleus theory. The wave function of this state contains a (1f 7/2 1p 1 2/−1 )3-particle-hole-component. Earlier spin parity assignments of other resonances are discussed.