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Radiological Risk Assessment and Environmental Analysis$
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John E. Till and Helen Grogan

Print publication date: 2008

Print ISBN-13: 9780195127270

Published to Oxford Scholarship Online: September 2008

DOI: 10.1093/acprof:oso/9780195127270.001.0001

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External Dosimetry

External Dosimetry

Chapter:
(p.447) 10 External Dosimetry
Source:
Radiological Risk Assessment and Environmental Analysis
Author(s):

David. C. Kocher

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780195127270.003.0010

This chapter discusses compilations of external dose coefficients, which give external dose rates per unit concentration of radionuclides in specified source regions (air, water, ground surface, or surface soil), that can be used in assessments of dose to the public from radionuclides in the environment. Assumptions used in calculating external dose coefficients are described, and the applicability of calculated dose coefficients is discussed. External dose coefficients in the form of effective doses per unit concentration of selected radionuclides in air, in water, or on the ground surface are tabulated. The chapter also discusses the point-kernel method, which can be used to estimate external dose from arbitrary distributions of radionuclides and corrections to external dose coefficients for photons that take into account effects of building shielding during indoor residence, ground roughness, exposure during boating activities, and exposure to contaminated shorelines.

Keywords:   external dose coefficients, dose rates, effective dose, point-kernel method

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