The magnetic dipole moment of the 150 keV state of 177Lu

The magnetic dipole interaction of the 150 keV state of 177Lu in an environment of metallic ytterbium has been investigated by time-differential perturbed angular correlation experiments. The measurements were performed in an external magnetic field of 0.4 T at room temperature. Two independent measurements at different γ-γ cascades give the same Larmor precession frequency. From the weighted average the magnetic dipole moment of the 150 keV state is derived as μ=+5.5(3)μsub(K). From the angular correlation coefficient A22=-0.042(7) of the (139-150) keV γ-γ cascade the mixing ratio delta=+0.21(4) is deduced. The coefficient A22=+0.015(7) of the (1080-150) keV γ-γ cascade yields the mixing ratio delta=+0.08(4). (Auth.)