Narrow Results

We study the extremely neutron-rich nuclei for Z = 17–23, 37–40 and 60–64 regions of the periodic table by using axially deformed relativistic mean field formalism with NL3* parametrization. Based on the analysis of binding energy, two neutron separation energy, quadrupole deformation and root mean square radii, we emphasized the speciality of these considered regions which are recently predicted islands of inversion.

Extension of the nuclear radius in 3α state in ¹²C is probed by the α+ ¹²C inelastic scattering. In the α inelastic scattering, the prominent shrinkage is observed in the differential cross section of the final 2₂⁺ channel in comparison to the yrast 2₁⁺ channel. This shrinkage is a first evidence of the enhanced nuclear radius, which is originated from the 3α structure in the 2₂⁺ state. The nuclear radii of the 3α radius is speculated by applying the Blair’s phase rule. The analyses is also extended to the ¹³C(K^-, π^-)¹³_ΛC reactions.

We briefly review our formula for a proton-nucleus total reaction cross section, σ^R, constructed in the black-sphere approximation of nuclei, in which a nucleus is viewed as a “black” sphere of radius “a”. An extension to reactions involving neutron-rich nuclei is also reported.