g Factor of the 21+ state of Hf170

Abstract

The g factor of the 21+ state of Hf170 was measured by perturbed γ-γ angular correlation in a static external magnetic field. The result, g(21+)=0.28(5), extends the systematics of g factors of even-even Hf isotopes to N=98 and enables a better test of theoretical models. The g(21+) experimental values of these isotopes exhibit a remarkable constancy as a function of neutron number. This phenomenon, which was also observed for other isotopic chains in the Gd-W range, is explained in terms of a recently proposed empirical model. © 2007 The American Physical Society