Heavy-ion versus {sup 3}He/{sup 4}He fusion-fission reactions: Angular momentum dependence of dissipation in nuclear fission
- Department of Physics, Southeast University, Nanjing 210096 (China)
The stochastic Langevin model is employed to study dissipation properties in fission in the {sup 16}O + {sup 181}Ta {yields}{sup 197}Tl system by analyzing prescission neutron yields measured in this reaction. It has been found that the {sup 197}Tl nuclei undergo fission that is not in accordance with the standard Bohr-Wheeler statistical theory. A detailed comparison with previously published work in which fission excitation functions measured in {sup 3,4}He + {sup 197}Au {yields}{sup 200,201}Tl are shown to be in excellent agreement with the fission width formula predicted by the traditional models of nuclear fission suggests that nuclear dissipation strength may have an angular momentum dependence in addition to the known deformation and temperature dependence. Implications for the basic understanding of the observed abnormal rise in prescission particles at high energy and the need for further experimental confirmations are discussed.
- OSTI ID:
- 21596768
- Journal Information:
- Physical Review. C, Nuclear Physics, Vol. 84, Issue 3; Other Information: DOI: 10.1103/PhysRevC.84.034617; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ALPHA REACTIONS
ANGULAR MOMENTUM
COMPARATIVE EVALUATIONS
EXCITATION FUNCTIONS
FISSION
GOLD 197 TARGET
HEAVY IONS
HELIUM 3 REACTIONS
NEUTRONS
OXYGEN 16 REACTIONS
STATISTICAL MODELS
STOCHASTIC PROCESSES
TANTALUM 181 TARGET
TEMPERATURE DEPENDENCE
THALLIUM 197
THALLIUM 200
THALLIUM 201
BARYONS
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
CHARGED PARTICLES
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DAYS LIVING RADIOISOTOPES
DIFFERENTIAL CROSS SECTIONS
ELECTRON CAPTURE RADIOISOTOPES
ELEMENTARY PARTICLES
EVALUATION
FERMIONS
FUNCTIONS
HADRONS
HEAVY ION REACTIONS
HEAVY NUCLEI
HOURS LIVING RADIOISOTOPES
IONS
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
MATHEMATICAL MODELS
NUCLEAR REACTIONS
NUCLEI
NUCLEONS
ODD-EVEN NUCLEI
ODD-ODD NUCLEI
RADIOISOTOPES
SECONDS LIVING RADIOISOTOPES
TARGETS
THALLIUM ISOTOPES