Interference of fission amplitudes of neutron resonances and <Emphasis Type="Italic">T</Emphasis>-odd asymmetry for various prescission third particles in the ternary fission of nuclei |
| |
Authors: | S G Kadmensky V E Bunakov S S Kadmensky |
| |
Institution: | 1.Voronezh State University,Voronezh,Russia;2.Petersburg Nuclear Physics Institute,Russian Academy of Sciences,Gatchina,Russia |
| |
Abstract: | Differential cross sections for reactions of the true ternary fission of nuclei that was induced by cold polarized neutrons
were constructed with allowance of the effect that Coriolis interaction and the interference between fission amplitudes of
neutron resonances excited in fissile nuclei upon incidentneutron capture by target nuclei exerted on angular distributions
of prescission third particles (alpha particles, neutrons, or photons). It is shown that T -odd TRI- and ROT-type asymmetries for prescission alpha particles are associated with, respectively, the odd and even components
of the Coriolis interaction-perturbed amplitude of angular distributions of particles belonging to the types indicated above.
These asymmetries have angular distributions differing from each other and stemming from a nontrivial dependence of these
components on the neutron-resonance spins J
s
and their projections K
s
onto the symmetry axis of the nucleus involved. It is shown that angular distributions of prescission photons and neutrons
from reactions of the ternary fission of nuclei that is induced by cold polarized neutrons are determined by the effect of
Coriolis forces exclusively. Therefore, the emerging T-odd asymmetries have a character of a ROT-type asymmetry and are universal for all target nuclei. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|