Fission fragment angular distributions for neutron fission of /sup 230/Th
Journal Article
·
· Phys. Rev., C; (United States)
Fission fragment angular distributions have been measured for the neutron fission of /sup 230/Th in the energy range 680 --1100 keV with special attention to the region of the large vibrational resonance in the neutron fission cross section near 715 keV. The analysis involved the search for a set of fission barrier parameters which lead to a simultaneous description of the angular distribution data and the existing data for the fission cross section. It was found that the data for the 715 keV resonance could be reproduced only if the K=1/2 band responsible for this resonance splits into two separate bands, one of each parity, and if the decoupling parameter has a parity dependent sign. The derived moment of inertia constant h/sup 2//2I has a value of 1.85 keV which suggests that the vibrational resonance occurs within a minimum in the potential energy surface corresponding to a ..beta.. deformation of epsilon/sub 2/=0.85. The derived data are all consistent with the predicted triple-humped fission barrier for the thorium nuclei.
- Research Organization:
- Australian Atomic Energy Commission Research Establishment, Private Mailbag, Sutherland, N.S.W. Australia
- OSTI ID:
- 5172705
- Journal Information:
- Phys. Rev., C; (United States), Journal Name: Phys. Rev., C; (United States) Vol. 22:2; ISSN PRVCA
- Country of Publication:
- United States
- Language:
- English
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Journal Article
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Sat Aug 01 00:00:00 EDT 1987
· Phys. Rev. C; (United States)
·
OSTI ID:6461460
EFFECTIVE CROSS-SECTIONS AND THE ANISOTROPY OF Np$sup 237$ AND Th$sup 230$ FISSIONS
Journal Article
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Wed Oct 21 00:00:00 EDT 1959
· Doklady Akad. Nauk S.S.S.R.
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OSTI ID:4225707
Neutron-induced fission cross section of sup 232 Th from 1 eV to 20 keV
Journal Article
·
Sun Mar 31 23:00:00 EST 1991
· Physical Review, C (Nuclear Physics); (USA)
·
OSTI ID:5520995
Related Subjects
652026* -- Nuclear Properties & Reactions
A=220 & above
Experimental-- Spontaneous & Induced Fission-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR DISTRIBUTION
BARYON REACTIONS
CROSS SECTIONS
DISTRIBUTION
ENERGY LEVELS
ENERGY RANGE
EXCITED STATES
FISSION
FISSION BARRIER
FISSION FRAGMENTS
HADRON REACTIONS
KEV RANGE
KEV RANGE 100-1000
MATHEMATICAL MODELS
MEV RANGE
MEV RANGE 01-10
NEUTRON REACTIONS
NUCLEAR FRAGMENTS
NUCLEAR POTENTIAL
NUCLEAR REACTIONS
NUCLEON REACTIONS
PARITY
PARTICLE PROPERTIES
POTENTIALS
STATISTICAL MODELS
TARGETS
THORIUM 230 TARGET
VIBRATIONAL STATES
A=220 & above
Experimental-- Spontaneous & Induced Fission-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR DISTRIBUTION
BARYON REACTIONS
CROSS SECTIONS
DISTRIBUTION
ENERGY LEVELS
ENERGY RANGE
EXCITED STATES
FISSION
FISSION BARRIER
FISSION FRAGMENTS
HADRON REACTIONS
KEV RANGE
KEV RANGE 100-1000
MATHEMATICAL MODELS
MEV RANGE
MEV RANGE 01-10
NEUTRON REACTIONS
NUCLEAR FRAGMENTS
NUCLEAR POTENTIAL
NUCLEAR REACTIONS
NUCLEON REACTIONS
PARITY
PARTICLE PROPERTIES
POTENTIALS
STATISTICAL MODELS
TARGETS
THORIUM 230 TARGET
VIBRATIONAL STATES