Abstract
Angular distributions of the cross sections and analyzing powers for the (p,) reactions leading to the ground and first two excited states of the isobaric analog final nuclei and have been measured at MeV and 199.2 MeV, respectively. The (p,) cross sections are an order of magnitude larger than those of the (p,) reaction and exhibit a much stronger angular dependence. The (p,) analyzing power patterns are essentially state independent and similar to that of the elementary pp→d reaction near threshold. The analyzing power angular distribution for the (p,B(2.32 MeV, ) transition exhibits a ‘‘signature’’ characteristic of (p,) transitions to stretched high-spin two-particle one-hole final states, which is distinctly different from the pattern observed for transitions to low-spin final states. The differences between the two reactions are interpreted in terms of the dynamics of the elementary pp→d and pn→pp processes.
- Received 18 September 1986
DOI:https://doi.org/10.1103/PhysRevC.35.825
©1987 American Physical Society