Transient field measurements of g-factors in ^194,196,198Pt; g(2₁⁺) systematics in transitional W, Os, Pt nuclei

Transient field precessions were measured simultaneously for levels in the nuclei ^182,184,186W and ^1942,196,198Pt as their ions traversed polarized Gd hosts. These results allow a critical evaluation of conflicting g-factor values reported previously for the even Pt isotopes. Mass variations of g(2₁⁺) in the even W, Os, Pt nuclei are examined using the proton-neutron interacting boson model (IBM-2). The measured g-factors depart from the simplest IBM-2 description perhaps due to Subshell effects and/or small contributions from non-collective configurations which cause the neutron boson g-factor to vary with mass.