Measurement of the spindependent relative conversion coefficients in α-Fe and α-Fe2O3

The relative differences δ ns (n=1, 2, 3) of the spindependent conversion coefficients were measured for α-Fe and α=Fe2O3. In contrast to theoretical predictions of δ1s≃−10−5 we found δ1s≃−1.0(4)x10−2 for both α-Fe and α-Fe2O3. As a possible source for this difference we consider a dynamic coupling with the atomic spin during the conversion process.