New Gamma-Ray Buildup Factor Data for Point Kernel Calculations: ANS-6.4.3 Standard Reference Data

Technical Report · Thu Aug 01 00:00:00 EDT 1991

DOI:https://doi.org/10.2172/5441669· OSTI ID:5441669

Trubey, D. K. ^[1]

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1. Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

An American Nuclear Society Standards Committee Working Group, identified as ANS-6.4.3, has developed a set of evaluated gamma-ray isotropic point-source buildup factors and attenuation coefficients for a standard reference data base. The largely unpublished set of buildup factors calculated with the moments method has been evaluated by recalculating key values with Monte Carlo, integral transport, and discrete ordinates methods. Additional buildup factor data were obtained from PALLAS code results. Attention has been given to frequently-neglected processes such as bremsstrahlung and the effect of introducing a tissue phantom behind the shield. The proposed draft standard, provided as an appendix, contains data for a source energy range from 15 keV to 15 MeV and for 22 elements and 3 mixtures (water, air, and concrete). The buildup factor data are also represented as coefficients for the G-P fitting function. Tables giving correction factors for multiple scattering in tissue are also provided.

• Research Organization: US Nuclear Regulatory Commission (NRC), Washington, DC (United States). Div. of Regulatory Applications; Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USNRC; USDOE
• DOE Contract Number: AC05-84OR21400
• Other Award/Contract Number: NRC-FIN-L1887
• OSTI ID: 5441669
• Report Number(s): ORNL/RSIC--49/R1; NUREG/CR-5740; ON: TI91017068
• Country of Publication: United States
• Language: English

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
96 KNOWLEDGE MANAGEMENT AND PRESERVATION
97 MATHEMATICS AND COMPUTING
990200 -- Mathematics & Computers
990300 -- Information Handling
A CODES
AIR
ANNIHILATION
ANS-6.4.3
ATTENUATION
attenuation coefficients
BASIC INTERACTIONS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BODY
BREMSSTRAHLUNG
BUILDING MATERIALS
BUILDUP
buildup factors
COHERENT SCATTERING
COMPUTER CALCULATIONS
COMPUTER CODES
CONCRETES
DATA BASE MANAGEMENT
DAYS LIVING RADIOISOTOPES
DISCRETE ORDINATE METHOD
DOSES
ELECTROMAGNETIC INTERACTIONS
ELECTROMAGNETIC RADIATION
ELEMENTS
ENERGY SPECTRA
ENRICHED URANIUM REACTORS
EVEN-ODD NUCLEI
FLUIDS
FLUORESCENCE
FUNCTIONS
GAMMA RADIATION
gamma rays
GASES
HYDROGEN COMPOUNDS
Information Handling
INTERACTIONS
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
IONIZING RADIATIONS
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
KERNELS
LUMINESCENCE
MANAGEMENT
MATERIALS
MONTE CARLO METHOD
Nuclear Reactor Technology-- Components & Accessories
NUCLEI
OXYGEN COMPOUNDS
P CODES
PARTICLE INTERACTIONS
POINT KERNELS
POWER REACTORS
PWR TYPE REACTORS
Radiation & Shielding Physics-- Radiation Physics
Shielding Calculations & Experiments
RADIATION DOSES
RADIATIONS
RADIOISOTOPES
REACTORS
RESPONSE FUNCTIONS
SCATTERING
SHIELDING
SPECTRA
standard reference data
STANDARDS
THERMAL REACTORS
THREE MILE ISLAND-2 REACTOR
TISSUES
TRANSPORT THEORY
WATER
WATER COOLED REACTORS
WATER MODERATED REACTORS
XENON 133
XENON ISOTOPES