The inelastic scattering of 164 MeV pions from is studied using the distorted-wave impulse approximation in momentum space. The sensitivity of the predictions to various shell model descriptions of the yrast state is examined in detail. The excitation of the triplet of states (, , ) near 3.7 MeV and the (, , , ) triplet at about 5.2 MeV are also investigated within the context of the shell model. In order to explain the scattering to natural parity states [those with angular momentum and parity ], one must enhance the theoretical results by about the same factor as needed to explain the transition rates obtained from electromagnetic excitation. The sensitivity of the results to the isoscalar or isovector character of this enhancement is examined. Agreement between distorted-wave impulse approximation calculations and experiment is found to be satisfactory.
NUCLEAR REACTIONS, NUCLEAR STRUCTURE () MeV; target, theoretical based on DWIA in momentum space; effects of different shell model descriptions studied.
- Received 28 September 1979
- Published in the issue dated February 1980
© 1980 The American Physical Society