Abstract
The ground state of 229Pa91 is a 5/2± doublet, with the splitting energy being 220+-50 eV. A direct observation of P-odd effects in this system is of great interest, since this may furnish information about the parity-nonconserving effective one-nucleon potential. Since a transition between two oppositeparity doublet states is accompanied by a strong conversion, it is possible to study P-odd mixing by exploring the conversion-electron helicity and the circular polarization Pγ of the lines of atomic radiation that arises upon the filling of a hole in the 6s1/2, 6p1/2, and 6p3/2 shells of the 229Pa91 atom. Since Pγ is about 3–5% for individual atomic transitions, experiments aimed at observing parity-nonconservation effects on this basis are feasible.
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