Author: W. C. IngoldPublisher:
ISBN:
Category : Air ducts
Languages : en
Pages : 82
Book Description
An Empirical Formula for Calculating Gamma-ray Dose Attenuation in Concrete Ducts
Author: W. C. IngoldPublisher:
ISBN:
Category : Air ducts
Languages : en
Pages : 82
Book Description
A REVISED FORMULA FOR THE CALCULATION OF GAMMA-RAY SHIELDING PROPERTIES OF SHELTER ENTRANCEWAYS.
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 19
Book Description
An improved formula has been devised for the calculation of gamma-ray dose attenuation in two-legged air ducts through concrete. Comparisons are given between the predictions of the simple empirical formula and the results of measurements as well as predictions obtained by a more complicated computational technique. The accuracy of the empirical formula is discussed. It is shown that the formula is highly accurate, having essentially zero bias and a standard deviation of less than 14 percent of the correct value.
Attenuation of Gamma Radiation in a Two-legged 11-inch Rectangular Duct
Author: D. W. GreenPublisher:
ISBN:
Category :
Languages : en
Pages : 52
Book Description
Results are presented of experiments carried out with an 11 x 11-inch duct in concrete with one right-angle bend, using Co]x60 as a gamma-ray source. An empirical expression is obtained which adequately represents most of the experimental results of measurements available at the present time.
Nuclear Science Abstracts
Author: Civil Defense
Author: Clearinghouse for Federal Scientific and Technical Information (U.S.)Publisher:
ISBN:
Category : Civil defense
Languages : en
Pages : 88
Book Description
Dose-attenuation Variation with Incident Gamma-ray Energy in Two-legged Concrete and Steel Ducts
Author: J. M. ChapmanTechnical Abstract Bulletin
Author: Nuclear Science and Engineering
Author: The Variation of Dose Attenuation of Two-legged Concrete Ducts with Incident Gamma-ray Energy
Author: J. M. ChapmanPublisher:
ISBN:
Category :
Languages : en
Pages : 9
Book Description
Gamma-ray dose attenuation factors were measured in a 3-foot square and an 11-inch square duct using Au-198 (.412 Mev), Cs-137 (.662 Mev), and Co-60 (1.25 Mev) gamma-ray sources. Attenuation factors for given geometries were compared as a function of the incident gamma-ray energy. It was found that the attenuation factor decreases monotonically with increasing energy. Measured attenuation factors were compared with values obtained using a computer code based on the albedo concept. It was found that calculated attenuation factors are high by as much as g8 percent for Au-198 in the 11-inch duct. (Author).
Author: