Elsevier

Nuclear Physics A

Volume 232, Issue 1, 28 October 1974, Pages 235-248
Nuclear Physics A

Electron scattering and α-cluster description of 12C and 20Ne

https://doi.org/10.1016/0375-9474(74)90656-3Get rights and content

Abstract

The elastic and inelastic electron scattering form factors in the ground-state band of 12C and 20Ne have been calculated using the Brink α-cluster model projected wave functions. From a systematic comparison with experiment it is concluded that usual central forces like the Brink-Boeker B1 force give an unrealistically large clustering while that obtained using density dependent interactions like the Skyrme S1 force is too low. For intermediate values of the clustering it is possible in 12C to reproduce simultaneously the elastic as well as the inelastic form factors to the 21 +(4.44 MeV), 31(9.64 MeV) and 41 +(14.08 MeV) states for not too large transfers. Noticeable discrepancies between calculated and experimental 21+ and 31 inelastic form factors at transfers higher than 1.5 fm−1 reveal inherent weaknesses of the α-cluster wave functions which are not corrected after inclusion of the θ-vibrations.

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    Equipe de recherche associée au CNRS.

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