Neutron cross section calculations for fission-product nuclei. [0. 001 to 20 MeV, Hauser-Feshbach theory]
To satisfy nuclear data requirements for fission-product nuclei, Hauser-Feshbach statistical calculations with preequilibrium corrections for neutron-induced reactions on isotopes of Se, Kr, Sr, Zr, Mo, Sn, Xe, and Ba between 0.001 and 20 MeV. Spherical neutron optical parameters were determined by simultaneous fits to resonance data and total cross sections. Isospin coefficients appearing in the optical potentials were determined through analysis of the behavior of s- and p-wave strengths as a function of mass for a given Z. Gamma-ray strength functions, determined through fits to stable-isotope capture data, were used in the calculation of capture cross sections and gamma-ray competition to particle emission. The resulting (n,..gamma..), (n,n'), (n,2n), and (n,3n) cross sections, the secondary neutron emission spectra, and angular distributions calculated for 19 fission products will be averaged to provide a resulting ENDF-type fission-product neutronics file. 11 references.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 5671599
- Report Number(s):
- LA-UR-79-3332; CONF-791223-1; TRN: 80-002858
- Resource Relation:
- Conference: NEANDC specialist meeting on neutron cross sections of fission product nuclei, Bologna, Italy, 12 Dec 1979
- Country of Publication:
- United States
- Language:
- English
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BARIUM 139 TARGET
NEUTRON REACTIONS
KRYPTON
MOLYBDENUM
CAPTURE
INELASTIC SCATTERING
KNOCK-OUT REACTIONS
TOTAL CROSS SECTIONS
SELENIUM
STRONTIUM
TIN ISOTOPES
XENON ISOTOPES
ZIRCONIUM
ANGULAR DISTRIBUTION
CORRECTIONS
CROSS SECTIONS
DATA COMPILATION
EMISSION
FISSION PRODUCTS
GRAPHS
HAUSER-FESHBACH THEORY
ISOSPIN
KEV RANGE
MASS
MEV RANGE 01-10
MEV RANGE 10-100
OPTICAL MODELS
P WAVES
PRECOMPOUND-NUCLEUS EMISSION
RESONANCE
S WAVES
SPHERICAL MODEL
STATISTICAL MODELS
STRENGTH FUNCTIONS
THEORETICAL DATA
ALKALINE EARTH METALS
BARYON REACTIONS
DATA
DATA FORMS
DIRECT REACTIONS
DISTRIBUTION
ELEMENTS
ENERGY RANGE
FUNCTIONS
HADRON REACTIONS
INFORMATION
ISOTOPES
MATHEMATICAL MODELS
METALS
MEV RANGE
NONMETALS
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEAR THEORY
NUCLEON REACTIONS
NUMERICAL DATA
PARTIAL WAVES
PARTICLE PROPERTIES
RADIOACTIVE MATERIALS
RARE GASES
REFRACTORY METALS
SCATTERING
SEMIMETALS
TARGETS
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