Abstract
The problem of describing of P-odd and P-even asymmetries in reactions of the double and triple fission of oriented nuclei by unpolarized cold neutrons is solved on the basis of the quantum theory of fission. P-odd and P-even asymmetries in differential cross sections of the studied reactions having a character of angular dependence other than the fission reaction of unoriented nuclei by polarized neutrons are obtained, using a spin matrix constructed for the density of a compound nucleus and allowing for interference from the fission amplitudes of various pairs of neutron resonances excited in a nucleus upon the capture of cold unpolarized neutrons by an oriented target nucleus. It is demonstrated that observation of the investigated P-odd asymmetries is possible only upon polarization of the target nucleus, while P-even asymmetries can be observed for both the polarization and alignment of the target nucleus.
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