Selective population of maximum-J states in the d,α reaction at 80 MeV
Abstract
The (d,α) reactions on 40,44,48Ca and 58Ni have been studied using the 80 MeV incident deuteron beam of the Orsay synchrocyclotron. It was found that satisfactory distorted wave Born approximation fits can be obtained. The experimental angular distributions were structured and thus provide minimal ambiguity in the determination of the angular momentum transfer. The angular momentum matching conditions greatly favored large values for the angular momentum transfer. Together with the selectivity of the (d,α) reactions, it allowed the identification of 7+ states in 38,42,46K and 56Co. The observation of 7+ levels in 38,42,46K gives a measure of the f72 proton occupation number in the ground state of the target nuclei 40,44,48Ca. An apparent enhancement of certain of the 3+ states at high excitation energy was observed in 46K and 56Co and the relative 3+, 7+ separation was in qualitative agreement with a simple shell-model picture. NUCLEAR REACTIONS 40,44,48Ca(d,α) and 58Ni(d,α), E=80.2 MeV; measured σ(θ) enriched targets, microscopic DWBA analysis, deduced J, π, S.
- Publication:
-
Physical Review C
- Pub Date:
- October 1974
- DOI:
- 10.1103/PhysRevC.10.1422
- Bibcode:
- 1974PhRvC..10.1422F