The hyperfine structure (hfs) of 12 metastable states of 47Ti ihas been measured by laser induced fluorescence. 11 of these states have been measured additionally very precisely by a laser-rf double resonance method. Taking into account results of earlier hfs measurements, the hfs of altogether 17 fine structure states has been analyzed by the simultaneous parametrization of the one-and two-body interactions in the atomic hfs for the model space (3d+4s) N÷2 (N=2). This gives 16 parameters for the magnetic dipole interaction and 12 parameters for the electric quadrupole interaction. From the model space parameters, obtained from the hfs fit, the nuclear quadrupole moment Q(47Ti)=0.303(24b), has been evaluated at the first time; it is free of Sternheimer corrections up to second order.

A method of simultaneous parametrization of one-and two-body interactions in atomic hyperfine structure (HFS) of the configurations (3d+4s) u+2 is proposed. It is shown that the HFS of these configurations can be parametrized by the use of sixteen adjustable radial parameters for the magnetic dipole interaction and twelve radial parameters for the electric quadrupole interaction. From these one-and two-body parameters nuclear quadrupole moments can be evaluated which are almost free of Sternheimer corrections.

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