Abstract
The results of a comparative study of the ,) and ,) reactions at =200 MeV and 30°≤ are reported. The isospin-dependence of the NN→NNπ processes inside nuclei is investigated by comparing cross sections and analyzing powers for the ,) continuum production to those for corresponding NN→NNπ processes in the free case. The comparison favors the dominance of a quasifree two-nucleon mechanism in nuclear pion production. Relative populations of discrete final states in the ,) spectra are compared, confirming the dominance of the two-nucleon mechanism and suggesting the identification of some high-spin states in the mirror nuclei and . Cross-section and analyzing power angular distributions are presented for discrete final states populated strongly in ,) and ,) up to 24 MeV excitation energy. Cross-section data for a number of ,13C(p,) transitions are compared to (p,) shell-model calculations employing the elementary pp→d amplitude along with realistic nuclear wave functions. Isolated anomalous features exhibited by strong ,13C(p,) transitions to two highly excited discrete states in and are discussed and alternative possible interpretations for these states are presented.
- Received 5 April 1989
DOI:https://doi.org/10.1103/PhysRevC.40.813
©1989 American Physical Society