Lifetime and g-factor measurements of the 11(-) isomer in Tc-92

Abstract

The half-life (T-1/2) and g factor of the 2002 keV 11(-) isomer in the odd-odd nucleus Tc-92 produced by the pulsed heavy-ion reaction Zn-68(Si-28,p3n)Tc-92 have been measured using time differential perturbed angular distribution method. The measured T-1/2 value is 3.15(20) ns. From the observed spin precession frequency omega(L) of a Tc-92 recoil implanted into a ferromagnetic Ni host, we obtain the g factor to be 0.806(20). The measured value of the g factor is in good agreement with a shell model analysis carried out using pi(p(1/2)g(9/2)) and nu(p(1/2)g(9/2)) orbitals for the proton particles and neutron holes outside the Sr-88 core.