Radiation damage by high-energy neutrons
Graphite rods and vitreous silica blocks were exposed to the neutrons generated in a spallation source having a large flux component in the 100-MeV region. The electrical conductivity of the former and the dilatation of the latter were measured. The ratio of the damage rate in silica to that in graphite exceeded that reported for fission neutrons, and this is attributed to the scattering cross sections of carbon falling more in the neutron highenergy region than do those of silicon and oxygen. Within the authors' knowledge of the fluxes and their spectra and the yield functions, no great enhancement of the damage rate is found as compared to that which would be calculated from simple isotropic scattering.
- Research Organization:
- Argonne National Laboratory 9700 South Cass Avenue, Argonne, Illinois 60439
- OSTI ID:
- 6834976
- Journal Information:
- Nucl. Sci. Eng.; (United States), Journal Name: Nucl. Sci. Eng.; (United States) Vol. 73:1; ISSN NSENA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
220400* -- Nuclear Reactor Technology-- Control Systems
BARYONS
CARBON
CHALCOGENIDES
COMPARATIVE EVALUATIONS
CONTROL ELEMENTS
CROSS SECTIONS
DAMAGING NEUTRON FLUENCE
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELEMENTAL MINERALS
ELEMENTARY PARTICLES
ELEMENTS
ENERGY RANGE
EXPANSION
FERMIONS
FISSION NEUTRONS
FUNCTIONS
GRAPHITE
HADRONS
IRRADIATION
ISOTROPY
MEV RANGE
MEV RANGE 10-100
MINERALS
NEUTRON FLUENCE
NEUTRON FLUX
NEUTRON SOURCES
NEUTRON SPECTRA
NEUTRONS
NONMETALS
NUCLEAR REACTIONS
NUCLEONS
OXIDE MINERALS
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PARTICLE SOURCES
PHYSICAL PROPERTIES
PHYSICAL RADIATION EFFECTS
RADIATION EFFECTS
RADIATION FLUX
RADIATION SOURCES
REACTOR COMPONENTS
SCATTERING
SEMIMETALS
SILICA
SILICON
SILICON COMPOUNDS
SILICON OXIDES
SPALLATION
SPECTRA
SPECTRAL FUNCTIONS
THERMAL EXPANSION