Lightest and heaviest two-neutron halo nuclei, 6 He and 22 C

Abstract

The microscopic cluster model approach has been performed to study the nuclear structure of the lightest and heaviest two-neutron halo nuclei, 6 He and 22 C, respectively. The matter radius and binding energy for the 6 He and 22 C nuclei are calculated and the effect of the core deformation ( 20 C) on the properties of 22 C nuclei is also discussed. Calculations have shown that the microscopic cluster model provides a good description of binding energy as well as matter radius in comparison to experimental data. The ttings of some parameters such as central potential depth (V o ), empirical constant (r o ), and surface diffuseness value (a) are discussed to nd agreement in the results with the available experimental data. The exotic properties of two-neutron halo nuclides 6 He and 22 C such as weak binding energy, abnormal large matter radius, and Borromean system have been con rmed in the present work.