Dipole and quadrupole moments of mirror nuclei B-8 and Li-8

Magnetic dipole and electric quadrupole moments of the mirror nuclei Li-8 a nd B-8 are analysed in the framework of the multiparticle shell model by us ing two approaches: (i) the one-particle spectroscopic factors and (ii) the one-particle fractional parentage coefficients. These two approaches are c ompared both each to other and with a microscopic multicluster model. The o ne-particle nucleon states are calculated with taking into account the cont inuum by the method of the expansion of the Sturm-Liouville functions. The experimental magnetic and quadrupole moments of Li-8 and B-8 are reprod uced well by using fractional parentage coefficients technique. The ro st m ean-square radii and the radial density distributions are obtained for thes e nuclei. (C) 2001 Elsevier Science B.V. All rights reserved.