Elsevier

Nuclear Physics A

Volume 489, Issue 1, 14 November 1988, Pages 125-145
Nuclear Physics A

Molecular effects in the 12C + 13C exit channel of the reaction 16O + 9Be

https://doi.org/10.1016/0375-9474(88)90057-7Get rights and content

Abstract

Angular distributions for the reactions 9Be(16O, 17O)8Be and 9Be(16O, 12C)13C leading to the lowest-lying 12, 12+ and 52+ states in 13C have been measured at energies close to the Cou barrier. The angular distributions of the transitions to the 12 and 12+ states in 13bit fast variations within small energy intervals. It was attempted to reproduce the data by means of EFR-DWBA calculations performed up to second order. These attempts failed, particularly for the low-energy data. It is concluded that this failure is due to the formation of single-particle molecular orbitals in the 12+13C exit channel and that nucleon promotion at avoided crossings causes the fast variations in the angular distributions.

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