High resolution investigation of the 30Si(þ, þ)30Si reaction

Abstract

The differential cross section for elastic scattering of protons on 30Si was measured with surface barrier counters at four angles. Thirty-six 30Si(þ, γ)31P resonances are known in the Ep=1–2MeV region. Fifteen of these were also observed in the 30Si(þ, þ)30Si reaction, with natural widths varying from 10 keV down to 13 eV. For all fifteen resonances the proton orbital momenta, and thus the parities, could be determined unambiguously; the spins are known already from the (þ, γ) work.

Partial widths for proton and γ-ray emission are computed from the widths and the (þ, γ) yields. Upper limits are given for the widths of unobserved resonances.