Determination of neutron multiplication coefficients for fuel elements irradiated by spallation neutrons

Journal Article · Mon Feb 15 00:00:00 EST 2010 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.81.024614· OSTI ID:21386617

Bhatia, Chitra; Kumar, V ^[1]

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1. H.E.N.P. Laboratory (ADS Program), Department of Physics, University of Rajasthan, Jaipur-302004 (India)

A neutron multiplication coefficient, k{sub eff}, has been estimated for spallation neutron flux using the data of spectrum average cross sections of all absorption, fission, and nonelastic reaction channels of {sup 232}Th, {sup 238}U, {sup 235}U, and {sup 233}U fuel elements. It has been revealed that in spallation neutron flux (i) nonfission, nonabsorption reactions play an important role in the calculation of k{sub eff}, (ii) one can obtain a high value of k{sub eff} even for fertile {sup 232}Th fuel, which is hardly possible in a conventional fast reactor, and (iii) spectrum average absorption cross sections of neutron poisons of a conventional reactor are relatively very small.

• OSTI ID: 21386617
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 81, Issue 2; Other Information: DOI: 10.1103/PhysRevC.81.024614; (c) 2010 The American Physical Society; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ABSORPTION
CROSS SECTIONS
FAST REACTORS
FISSION
FUEL ELEMENTS
MULTIPLICATION FACTORS
NEUTRON FLUX
NEUTRONS
SPALLATION
SPECTRA
THORIUM 232
URANIUM 233
URANIUM 235
URANIUM 238
ACTINIDE NUCLEI
ALPHA DECAY RADIOISOTOPES
BARYONS
DIMENSIONLESS NUMBERS
ELEMENTARY PARTICLES
EPITHERMAL REACTORS
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
FERMIONS
HADRONS
HEAVY ION DECAY RADIOISOTOPES
HEAVY NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
MINUTES LIVING RADIOISOTOPES
NEON 24 DECAY RADIOISOTOPES
NUCLEAR REACTIONS
NUCLEI
NUCLEONS
RADIATION FLUX
RADIOISOTOPES
REACTOR COMPONENTS
REACTORS
SORPTION
SPONTANEOUS FISSION RADIOISOTOPES
THORIUM ISOTOPES
URANIUM ISOTOPES
YEARS LIVING RADIOISOTOPES