DENSITY DISTRIBUTION OF LI-11 AND PROTON ELASTIC-SCATTERING FROM LI-9AND LI-11

The density distribution of Li-11 was obtained by assuming it to consi st of a Li-9 core in a harmonic oscillator potential plus two neutrons . The density distributions of the two neutrons were expanded in Fouri er-Bessel terms. The coefficients of the Fourier-Bessel expansions wer e obtained by calculating reaction cross sections in a Glauber-type mo del and comparing with experimental values. The halo structure of the nucleus is clearly manifested in the calculations. The density obtaine d was then used to calculate the real part of the proton-nucleus optic al potential in the folding model. Good fits to the p + Li-9 and p + L i-11 elastic scattering data were obtained.