Magnetic moments of the 2/sup +/ first excited states of even iron isotopes

The large magnetic fields that act on fast-moving ions traversing thin magnetized Fe foils were utilized to remeasure the magnetic moments of the first excited 2/sup +/ states of /sup 54/Fe and /sup 58/Fe. The technique reported here does not require an accurate knowledge of the nuclear lifetime and does not depend on the static magnetic field of Fe in Fe. Assuming g (/sup 56/Fe,2/sup +/) = 0.61 +- 0.08, we obtain g = 1.68 +- 0.38 and g = 0.46 +- 0.10 for the first 2/sup +/ states of /sup 54/Fe and /sup 58/Fe, respectively. The present results agree well with previous measurements and support the existing models for the structure of these states.