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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Original Russian Text © S.G. Kadmenskii, V.E. Bunakov, L.V. Titova, 2012, published in Izvestiya Rossiiskoi Akademii Nauk. Seriya Fizicheskaya, 2012, Vol. 76, No. 8, pp. 1046–1050.
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Kadmenskii, S.G., Bunakov, V.E. & Titova, L.V. P-odd and P-even asymmetries for reactions of double and triple fission of polarized target nuclei by cold neutrons. Bull. Russ. Acad. Sci. Phys. 76, 942–946 (2012). https://doi.org/10.3103/S1062873812080163
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DOI: https://doi.org/10.3103/S1062873812080163