Abstract
The differential cross-sections of the elastic and inelastic α +11B scattering was measured at E(α) = 29 MeV. The analysis of the data by Modified Diffraction Model (MDM) showed that the root-mean- square (RMS) radius of the 11B state 3/2-, E* = 8.56 MeV is ~ 0.5 fm larger than that of the ground state. It is found that the radius of 3/2- (8.56 MeV) state in the 11B nucleus is close to the radii of the Hoyle state in 12C.
Highlights
One of the most significant theoretical predictions was the hypothesis of excited nuclear cluster states with abnormally large radii
This paper is a part of our extensive study of the cluster structure in the 1p-shell nuclei, where we investigate the interaction of deuterons, 3He and alpha
The analysis was done within the Modified Diffraction Model (MDM) [13]
Summary
One of the most significant theoretical predictions was the hypothesis of excited nuclear cluster states with abnormally large radii. Theoretical and experimental studies of exotic cluster states concentrated on the famous state of the 12C nucleus with the spin–parity Iπ = 0+ and excitation energy of 7.65 MeV (Hoyle state).
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