Abstract
The reaction leading to three strong low-lying states in has been studied as a function of energy from 5.0 to 10.5 MeV at 100, 120, 140, and 160° laboratory angles. The strong, unusually shaped threshold cusp observed in the ( g.s.) excitation curve near 7.56 MeV, threshold of the ( isobaric analog resonance) reaction, is discussed in terms of its position in a systematic study and classification of such threshold effects, using simple quantitative physical considerations. The data are fit with coupled-channel Born-approximation calculations.
- Received 9 April 1971
DOI:https://doi.org/10.1103/PhysRevC.4.836
©1971 American Physical Society