Interference of fission amplitudes of neutron resonances and T-odd asymmetry for various prescission third particles in the ternary fission of nuclei

Journal Article · Thu Dec 15 04:00:00 EST 2011 · Physics of Atomic Nuclei

DOI:https://doi.org/10.1134/S1063778811120064· OSTI ID:22029889

Bunakov, V E ^[1]; Kadmensky, S S ^[2]

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1. Russian Academy of Sciences, Petersburg Nuclear Physics Institute (Russian Federation)
2. Voronezh State University (Russian Federation)

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{sub s} and their projections K{sub 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.

• OSTI ID: 22029889
• Journal Information: Physics of Atomic Nuclei, Journal Name: Physics of Atomic Nuclei Journal Issue: 12 Vol. 74; ISSN 1063-7788; ISSN PANUEO
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALPHA PARTICLES
AMPLITUDES
ANGULAR DISTRIBUTION
ASYMMETRY
CAPTURE
CORIOLIS FORCE
DIFFERENTIAL CROSS SECTIONS
INTERFERENCE
NEUTRON REACTIONS
NEUTRONS
NUCLEI
PHOTONS
SPIN
TERNARY FISSION