Structural properties of the [sup.10]Be and [sup.10]C four-cluster nuclei

• Published in: Physics of atomic nuclei 2014-04, Vol.77 (4), p.415
• Main Authors: Grinyuk, B.E, Simenog, I.V
• Format: Article
• Language: English
• ISSN: 1063-7788; 1562-692X
• DOI: 10.1134/S1063778814030090

The structure functions for the [sup.10]Be and [sup.10]C nuclei are studied in a four-particle approximation (two alpha-particle clusters plus two nucleons). New versions of the αα interaction potential are constructed. Together with the nα, pα, and NN potentials proposed previously, they make it possible to describe the binding energies and radii of the nuclei being considered, along with the S-wave two-cluster phase shifts at low energies. General properties of four-particle wave functions are studied, and two basic configurations of the cross and tetrahedron types are revealed in the [sup.10]Be and [sup.10]C nuclei. A detailed analysis of the behavior of the structure functions is performed for these nuclei. The density distributions, form factors, and pair correlation functions are considered. The momentum distributions are obtained for the alpha particles and extra nucleons. The structure functions for the [sup.10]Be and [sup.10]C four-cluster nuclei are compared with those for the 6He three-cluster nucleus. The bound states of the nuclei are studied within a high-precision variational approach by using Gaussian bases.