STUDY OF AL27(HE3,P)SI29 AND AL27(HE3, P GAMMA)SI29 REACTIONS

The levels of Si29 have been studied by measuring angular distributions of the Al27(He3,p)Si29 reaction. A few states, in particular the level at 8.310 MeV (the analog of the Al29 ground state), were strongly excited with an orbital angular momentum transfer L=0 leading to states with J=32+,52+, and possibly 72+. The γ decay of some of these levels has been studied by p-γ coincidences. They all showed a very similar γ decay, namely, a preference to decay to those few positive-parity states that are also strongly populated in the (He3, p) reaction. From the radiative decay of the 8.310-MeV level and other evidence, we conclude that the 52+ state at 4.906 MeV contains the major portion of the antianalog strength. The coincidence data also contained events from Al27(He3,dγ)Si28. Analysis of these results showed that it was consistent with previous measurements. © 1969 The American Physical Society.