The effect of excitation of a fissioning nucleus on the partitioning of energy between the internal and collective motions
Journal Article
·
· Sov. J. Nucl. Phys. (Engl. Transl.); (United States)
OSTI ID:5971025
We consider the dependence of the average kinetic energy E-bar/sub k/ of the fission fragments and the average number of prompt neutrons nu-bar/sub p/ for neutron-induced fission of /sup 232/Th in the energy region 1.2--2.5 MeV. The behavior of E-bar/sub k/ and nu-bar/sub p/ indicates that there is a redistribution of fission energy between the collective and internal motions and that this redistribution depends on the excitation of the fissioning nucleus. We propose an explanation of the different behavior of E-bar/sub k/ and nu-bar/sub p/ for /sup 232/Th, as compared with heavier fissioning nuclei. The explanation is based on the changing role of shell effects for different excitations of the nucleus on the motion of the fissioning nucleus from the saddle point to scission.
- Research Organization:
- Physics and Power Engineering Institute, Obninsk
- OSTI ID:
- 5971025
- Journal Information:
- Sov. J. Nucl. Phys. (Engl. Transl.); (United States), Journal Name: Sov. J. Nucl. Phys. (Engl. Transl.); (United States) Vol. 42:4; ISSN SJNCA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
652016* -- Nuclear Properties & Reactions
A=220 & above
Theoretical-- Spontaneous & Induced Fission-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYON REACTIONS
BARYONS
COLLECTIVE EXCITATIONS
ELEMENTARY PARTICLES
ENERGY
ENERGY-LEVEL TRANSITIONS
EXCITATION
FERMIONS
FISSION
FISSION FRAGMENTS
FISSION NEUTRONS
HADRON REACTIONS
HADRONS
KINETIC ENERGY
NEUTRON REACTIONS
NEUTRONS
NUCLEAR FRAGMENTS
NUCLEAR REACTIONS
NUCLEON REACTIONS
NUCLEONS
PROMPT NEUTRONS
TARGETS
THORIUM 232 TARGET
A=220 & above
Theoretical-- Spontaneous & Induced Fission-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYON REACTIONS
BARYONS
COLLECTIVE EXCITATIONS
ELEMENTARY PARTICLES
ENERGY
ENERGY-LEVEL TRANSITIONS
EXCITATION
FERMIONS
FISSION
FISSION FRAGMENTS
FISSION NEUTRONS
HADRON REACTIONS
HADRONS
KINETIC ENERGY
NEUTRON REACTIONS
NEUTRONS
NUCLEAR FRAGMENTS
NUCLEAR REACTIONS
NUCLEON REACTIONS
NUCLEONS
PROMPT NEUTRONS
TARGETS
THORIUM 232 TARGET