Abstract
The $\alpha$ -cluster model with dispersion has been developed for some 4N nuclei in the 2s-1d shell. The previously considered molecule-like configuration for the 24Mg nucleus is compared with the octahedron one. For the 32S nucleus both the cubic and bitetrahedron configurations are discussed. Molecule-like configurations with the 32S nucleus core and additional dumb-bell for the 40Ca nucleus are proposed. The structure of the 40Ca nucleus consisting of six $\alpha$ -clusters arranged in a octahedron outside of tetrahedron 16O core is also considered. The calculated charge form factors and root mean square radii of such nuclei are in a reasonable agreement with the available experimental data.
Published Version
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