Detailed investigation of the buildup factors and spectra for point isotropic gamma-ray sources in the vicinity of the K edge in lead
Journal Article
·
· Nucl. Sci. Eng.; (United States)
OSTI ID:5170734
Detailed calculations of the buildup factors and spectra of gamma rays including fluorescence radiations in lead are carried out using a discrete ordinates code, PALLAS-PL,SP-Br. The exposure and absorbed dose buildup factors with and without fluorescence are tabulated for 11 source energies from 0.09 to 0.3 MeV for penetration depths up to 40 mfp. Important characteristics of the gamma-ray transport in the vicinity of the K edge of lead are explored using detailed energy spectra in the medium. The contribution of the fluorescence to buildup factors is extremely significant for the sources close to the K edge energy.
- Research Organization:
- Japan Atomic Energy Research Institute, Tokai Research Establishment, Tokai-mura, Ibaraki-ken
- OSTI ID:
- 5170734
- Journal Information:
- Nucl. Sci. Eng.; (United States), Journal Name: Nucl. Sci. Eng.; (United States) Vol. 93:4; ISSN NSENA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
654001* -- Radiation & Shielding Physics-- Radiation Physics
Shielding Calculations & Experiments
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BUILDUP
COMPUTER CALCULATIONS
COMPUTER CODES
DISCRETE ORDINATE METHOD
ELEMENTS
ENERGY RANGE
FLUORESCENCE
GAMMA SOURCES
GAMMA SPECTRA
GAMMA TRANSPORT THEORY
LEAD
LUMINESCENCE
METALS
MEV RANGE
MEV RANGE 01-10
P CODES
RADIATION SOURCES
RADIATION TRANSPORT
SPECTRA
TRANSPORT THEORY
Shielding Calculations & Experiments
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BUILDUP
COMPUTER CALCULATIONS
COMPUTER CODES
DISCRETE ORDINATE METHOD
ELEMENTS
ENERGY RANGE
FLUORESCENCE
GAMMA SOURCES
GAMMA SPECTRA
GAMMA TRANSPORT THEORY
LEAD
LUMINESCENCE
METALS
MEV RANGE
MEV RANGE 01-10
P CODES
RADIATION SOURCES
RADIATION TRANSPORT
SPECTRA
TRANSPORT THEORY