Asymptotic normalization coefficients and neutron halo of the excited states in 12B and 13C -: art. no. 034312

The transfer reactions of B-11(d,p) B-12 and C-12(d, p) C-13, at incident energy of 11.8 MeV, have been used to extract asymptotic normalization coefficients and root-mean-square radii for the last neutron in B-12 and C-13. It is found experimentally that the second (J(pi) = 2-) and third (J(pi) = 1(-)) excited states in B-12 and the first (J(pi) = 1/2(+)) excited state in C-13 are the neutron halo states, whereas the third (J(pi) = 5/2(+)) excited state in C-13 is a neutron skin state.