Gamma-ray buildup factors for a point isotropic source in stratified spherical shields

Journal Article · Mon May 01 04:00:00 EDT 1989 · Nuclear Science and Engineering; (USA)

DOI:https://doi.org/10.13182/NSE88-68· OSTI ID:5176446

Su, M F; Jiang, S H ^[1]

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1. National Tsing-Hua Univ., Dept. of Nuclear Engineering, Hsinchu 30043 (TW)

A general review of investigations of gamma-ray buildup factors is presented. Gamma-ray buildup factors for a point isotropic source in stratified spherical shields have been calculated using the one-dimensional gamma-ray transport code BIGGI-4T. The behavior of the buildup factor for stratified shields with respect to the behavior for the component materials differs between spherical and slab geometry. In addition to a material change effect, the buildup factor for a point isotropic source in stratified spherical shields suffers a density variation effect, which is much more prominent for configurations of heavier density followed by lighter density. The density variation effect can be eliminated by using a specially adjusted calculation of the stratified shields. It has also been found that energy absorption buildup factors in Goldstein and Wilkins' data have relatively large uncertainties.

• OSTI ID: 5176446
• Journal Information: Nuclear Science and Engineering; (USA), Journal Name: Nuclear Science and Engineering; (USA) Vol. 102:1; ISSN 0029-5639; ISSN NSENA
• Country of Publication: United States
• Language: English

Related Subjects

654001* -- Radiation & Shielding Physics-- Radiation Physics
Shielding Calculations & Experiments
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
B CODES
BUILDUP
CALCULATION METHODS
COMPUTER CODES
CONFIGURATION
DATA ANALYSIS
DOCUMENT TYPES
ELECTROMAGNETIC RADIATION
GAMMA RADIATION
GEOMETRY
IONIZING RADIATIONS
ISOTROPY
MATHEMATICS
ONE-DIMENSIONAL CALCULATIONS
PERFORMANCE
POINT SOURCES
RADIATION SOURCES
RADIATION TRANSPORT
RADIATIONS
REVIEWS
SHIELDS
SLABS
SPHERICAL CONFIGURATION
UNCERTAINTY PRINCIPLE