MICROSCOPIC INVESTIGATION OF NUCLEAR-STRUCTURE WITH DYNAMIC BOSE-FERMI SYMMETRY

We have described a seniority conserving mapping procedure from the sh ell model space to the boson-quasifermion space for odd nuclei within the framework of the Otsuka-Arima-Iachello mapping which is suitable i n regions where seniority is a good quantum number. We show that, when a number of levels are allowed to the odd fermion in the interacting boson-fermion model (IBFM), one can use the dynamic symmetry, if prese nt, to unambiguously find out the parameters in the IBFM Hamiltonian. As a simple example of the technique, we have discussed the case of Ni -59 where an approximate U-B+F(S) X SUF(2) is known to exist.