Determination of the structure of Ne31 by a fully microscopic framework

We perform the first quantitative analysis of the reaction cross sections of Ne28-32 by C12 at 240MeV/nucleon, using the double-folding model with the Melbourne g matrix and the deformed projectile density calculated by antisymmetrized molecular dynamics. To describe the tail of the last neutron of Ne31, we adopt the resonating group method combined with antisymmetrized molecular dynamics. The theoretical prediction excellently reproduces the measured cross sections of Ne28-32 with no adjustable parameters. The ground state properties of Ne31, i.e., strong deformation and a halo structure with spin parity 3/2 ^-, are clarified.