Detailed Investigation of the Buildup Factors and Spectra for Point Isotropic Gamma-Ray Sources in the Vicinity of theKEdge in Lead
- 1 August 1986
- journal article
- research article
- Published by Taylor & Francis in Nuclear Science and Engineering
- Vol. 93 (4) , 376-385
- https://doi.org/10.13182/nse86-a18473
Abstract
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.Keywords
This publication has 7 references indexed in Scilit:
- A Study of Buildup Factors, Angular and Energy Distributions at Small Distances from Three Source Geometries — Plane Isotropic, Point Isotropic, and Plane Normal — for Low-Energy Gamma-Ray Incidence on WaterNuclear Science and Engineering, 1985
- Point Isotropic Buildup Factors of Gamma Rays, Including Bremsstrahlung and Annihilation Radiation for Water, Concrete, Iron, and LeadNuclear Science and Engineering, 1985
- Buildup Factors of Gamma Rays Including Bremsstrahlung and Annihilation Radiation for Water, Concrete, Iron, and LeadNuclear Science and Engineering, 1984
- Effect of Fluorescence, Bremsstrahlung, and Annihilation Radiation on the Spectra and Energy Deposition of Gamma Rays in Bulk MediaNuclear Science and Engineering, 1982
- Transport Calculation of Gamma Rays Including Bremsstrahlung by the Discrete Ordinates Code PALLASNuclear Science and Engineering, 1981
- Point Isotropic Gamma-Ray Buildup Factors in ConcreteNuclear Science and Engineering, 1975
- Photon cross sections from 1 keV to 100 MeV for elements Z=1 to Z=100Atomic Data and Nuclear Data Tables, 1970