Abstract
We report the hyperfine structure (hfs) measurement of the metastable (3d6 4s2)a3H4, 5, 6 states of57Fe. The kHz-precision of these experimental results together with the hyperfine structure values of (3d6 4s2)a5D1, 2, 3, 4, (3d7 4s)a5F2, 3, 4, 5, and (3d7 4s)a3F2, 3, 4, which were measured earlier, allowed to determine a very detailed set of effective radial parameters describing the hfs of these states, using a new parametrization method. This method treats one- and two-body contributions to the hfs separately. In this way configuration interaction effects in the hfs of the57Fe atom can be studied in detail and compared with configuration interaction effects in the fine structure of the same atom.
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