Gamma-ray and neutron dose-equivalent buildup factors for infinite slabs

Journal Article · Sat Feb 01 04:00:00 EST 1992 · Nuclear Science and Engineering; (United States)

OSTI ID:5566309

Dunn, W L; Yacout, A M; O'Foghludha, F ^[1]; Riel, G ^[2]

---

1. Quantum Research Services, Inc., Durham, NC (US)
2. Naval Surface Weapons Center, Silver Spring, MD (United States). White Oak Lab.

In this paper gamma-ray and neutron dose-equivalent buildup factors are calculated for six common shielding materials in a point-source, infinite-slab, point-detector geometry using a decomposition of the solution to the transport problem into single- and multiple-scatter components. A rigorous solution for the single-scatter component is constructed and a Monte Carlo model for the multiple-scatter component is employed. Simplified models are fit to the calculated buildup factors as functions of slab thickness and source-detector separation, and model constants are evaluated for each of several source energies. Single-scatter and total slab buildup factors are presented, both in tabular form and in graphs that also show the fitted models, for six materials. The models are demonstrated for a sample problem.

• OSTI ID: 5566309
• Journal Information: Nuclear Science and Engineering; (United States), Journal Name: Nuclear Science and Engineering; (United States) Vol. 110:2; ISSN 0029-5639; ISSN NSENA
• Country of Publication: United States
• Language: English

Related Subjects

440100* -- Radiation Instrumentation
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
BARYONS
DIMENSIONS
DOSES
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
FERMIONS
GAMMA RADIATION
HADRONS
IONIZING RADIATIONS
MATERIALS
MEASURING INSTRUMENTS
MONTE CARLO METHOD
NEUTRONS
NUCLEONS
POINT SOURCES
RADIATION DETECTORS
RADIATION DOSES
RADIATION SOURCES
RADIATIONS
SCATTERING
SHIELDING MATERIALS
SLABS
THICKNESS