Magnetic hyperfine interaction of the 2/sup +/ rotational states in muonic /sup 190,192/Os

In muonic /sup 190,192/Os the magnetic hf-splitting of the 2/sup +/ to 0/sup +/ nuclear transition was measured. The hf-splittings Delta E (/sup 190/Os)=665+or-80 eV and Delta E(/sup 192/Os)=800+or-80 eV of the 2/sup +/ state are reduced to 59% compared to a point-like magnetic moment in agreement with the assumption of a magnetization density distribution proportional to R/sup 2/ rho /sub charge/(R) as calculated from a rigid rotator. The influence of these results on the analysis of muonic isomer shifts is pointed out. (11 refs)