One-body dissipation in agreement with prescission neutrons and fragment kinetic energies

Journal Article · Mon Jun 07 04:00:00 EDT 1993 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.70.3538· OSTI ID:6382156

Wada, T ^[1]; Abe, Y ^[2]; Carjan, N ^[3]

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1. Linear Accelerator Laboratory, The Institute of Physical and Chemical Research (RIKEN), Wako, Saitama 351-01 (Japan)
2. Yukawa Institute for Theoretical Physics, Kyoto University, Kitashirakawa, Kyoto 606 (Japan)
3. Centre d'Etudes Nucleaires de Bordeaux, 33175 Gradignan CEDEX (France)

Fission dynamics of hot nuclei have been investigated using the two-dimensional Langevin equation. Including particle evaporation in the continuous limit, prescission multiplicities of neutrons, protons, and [alpha] particles have been calculated. Both the calculated number of prescission neutrons and the average total kinetic energy of fission fragments are consistent with experimental values when one-body dissipation is assumed. Unusually strong hydrodynamical two-body viscosity also reproduces the experimental neutron multiplicity, but it significantly underestimates the average kinetic energy.

• OSTI ID: 6382156
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 70:23; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

663300 -- Nuclear Reactions & Scattering
General-- (1992-)
663450* -- Heavy-Ion-Induced Reactions & Scattering-- (1992-)
663470 -- Fission-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALPHA PARTICLES
BARYONS
CHARGED PARTICLES
ELEMENTARY PARTICLES
ENERGY
EQUATIONS
EVAPORATION
FERMIONS
FISSION
FISSION FRAGMENTS
HADRONS
KINETIC ENERGY
LANGEVIN EQUATION
MULTIPLICITY
NEUTRONS
NUCLEAR FRAGMENTS
NUCLEAR REACTIONS
NUCLEI
NUCLEONS
PHASE TRANSFORMATIONS
PROTONS
TWO-DIMENSIONAL CALCULATIONS
VISCOSITY