Evidences for Causal Decoupling between Statistical Probability and Time Scale of Fission

Journal Article · Fri Apr 30 00:00:00 EDT 2010 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3431445· OSTI ID:21367195

Karamian, S A ^[1]

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1. Joint Institute for Nuclear Research, Dubna, Moscow Region, 141980 (Russian Federation)

Fission of highly excited nuclei is affected by the viscose character of the system motion in deformation coordinates as is reported for very heavy nuclei with Z>=90. The long-time-scale fission was proved for such systems formed in heavy-ion induced reactions. The overdamped diabatic motion may influence also fission of the spallation-residue products in reactions with protons at intermediate energy. In the present work, the experimental results on blocking lifetime experiments are analyzed together with the independent data on fission-to-spallation ratios for medium-mass targets. Cross examination of the fission probability, time-scale, and pre-fission neutron multiplicity allows a new conclusion on fission mechanism. The novel approach is specified for estimate of the characteristic fission time and for the consistent interpretation of whole set of experimental results. The standard statistical approach fails for understanding of them without contradictions, though some partial data at restricted range of the encounter parameters could be described, as known from previous publications.

• OSTI ID: 21367195
• Journal Information: AIP Conference Proceedings, Vol. 1224, Issue 1; Conference: International symposium on exotic nuclei, Sochi (Russian Federation), 28 Sep - 2 Oct 2009; Other Information: DOI: 10.1063/1.3431445; (c) 2010 American Institute of Physics; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CHANNELING
DECOUPLING
FISSION
FISSION NEUTRONS
HEAVY ION REACTIONS
HEAVY NUCLEI
LIFETIME
MULTIPLICITY
NUCLEAR DEFORMATION
PROTONS
SPALLATION
STATISTICAL MODELS
TRANSACTINIDE ELEMENTS
BARYONS
DEFORMATION
ELEMENTARY PARTICLES
ELEMENTS
FERMIONS
HADRONS
MATHEMATICAL MODELS
NEUTRONS
NUCLEAR REACTIONS
NUCLEI
NUCLEONS
TRANSPLUTONIUM ELEMENTS
TRANSURANIUM ELEMENTS