Author: David Lee StuckerPublisher:
ISBN:
Category : Gamma rays
Languages : en
Pages : 420
Book Description
Measurements and Analysis of Gamma-ray Streaming Through Concrete Lined Ducts
Author: David Lee StuckerPublisher:
ISBN:
Category : Gamma rays
Languages : en
Pages : 420
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
Nuclear Science Abstracts
Author: Dose Measurements of Gamma Radiation Streaming Through Concrete Ducts with and Without Lead Liners and Through Corrugated Steel Ducts
Author: J. M. ChapmanPublisher:
ISBN:
Category :
Languages : en
Pages : 32
Book Description
Dosimeter measurements were taken in a 3-foot-square, two-legged concrete duct, with and without the presence of lead sheets covering the basic scattering areas in the corner, to determine the effectiveness of lead sheeting in reducing gamma radiation. For Co60 radiation, the lead sheets reduced the dose rate in the second leg of the duct down to 46% of the dose rate measured in the second leg of the duct without lead sheets, and for Cs137 radiation the reduction was down to 36%. Calculations were made to determine the effectiveness of the sheets in different size ducts, and comparisons were made with other methods for reducing radiation. Measured attenuation factors for a circular, thin-walled, corrugated steel duct were compared to values calculated by a simple computer program for a square, thick-walled steel duct. It appears that the computer code can be used to approximate attenuation factors for a corrugated steel duct. (Author).
Gamma-ray Streaming Through Ducts
Author: C. M. HuddlestonPublisher:
ISBN:
Category :
Languages : en
Pages : 56
Book Description
A survey is presented of the current status of experimental and theoretical investigations of the problem of gamma-ray streaming through air ducts in concrete. Data are tabulated and plotted for a variety of experiments. Comparisons are made between theory and experiment, inconsistencies are pointed out, and areas needing further investigation are indicated.
Scattering of Cobalt-60 Gamma Radiation in Air Ducts
Author: Charles EisenhauerPublisher:
ISBN:
Category : Air ducts
Languages : en
Pages : 30
Book Description
The exposure dose rates due to cobalt-60 gamma radiation scattered in small air ducts in concrete has been measured for ducts with one and two right angle bends. The inside corner of a right angle bend has been found to be an important source of scattered radiation. Results are analyzed in terms of solid angle relationships and attempts are made to extrapolate experimental results to other duct configurations.
Scientific and Technical Aerospace Reports
Author: Radiation Streaming in Ducts and Shelter Entranceways
Author: C. W. TerrellPublisher:
ISBN:
Category :
Languages : en
Pages : 58
Book Description
This program is an analytical and experimental investigation of the streaming of gamma and neutorns through ducts and personnel shelter entranceways. The attenuation of gamma rays in concrete walled ducts having two right angle bends was measured. Both Z and U shapes were studied experimentally. The addition of a second right angle bend results in a large increase in the attenuation for gamma rays and the energy dependence of the attenuation is considerably reduced. For smaller ducts of cross section 1 by 1 foot, the attenuation of the second bend is far greater than for the larger cross section entranceway. (Author).
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