F-SPIN PURITY OF 2-EVEN NUCLEI(1 STATES IN EVEN)

A procedure is proposed by which upper limits to the F-spin purity of 2+1 states in even-even nuclei can be estimated by an analysis of expe rimental g-factors. The procedure, applied to 17 nuclei with 46 less-t han-or-equal-to Z less-than-or-equal-to 78, showed that F < F(max) adm ixtures up to 10% are not uncommon. A systematic behavior with Z is ob served. In the present approach, these admixtures account in part for the observed deviations of the boson g-factors g(pi) and g(nu) from th eir ''bare'' values of 1 and 0.