The Determination of Radium Or Radon in Gases, Liquids Or Solids PDF Download
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Author: J. E. Hudgens
Publisher:
ISBN:
Category : Ionization chambers
Languages : en
Pages : 20
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Book Description
Author: J. E. Hudgens
Publisher:
ISBN:
Category : Ionization chambers
Languages : en
Pages : 20
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Book Description
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309037891
Category : Science
Languages : en
Pages : 623
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Book Description
This book describes hazards from radon progeny and other alpha-emitters that humans may inhale or ingest from their environment. In their analysis, the authors summarize in one document clinical and epidemiological evidence, the results of animal studies, research on alpha-particle damage at the cellular level, metabolic pathways for internal alpha-emitters, dosimetry and microdosimetry of radionuclides deposited in specific tissues, and the chemical toxicity of some low-specific-activity alpha-emitters. Techniques for estimating the risks to humans posed by radon and other internally deposited alpha-emitters are offered, along with a discussion of formulas, models, methods, and the level of uncertainty inherent in the risk estimates.
Author: R. C. Thorburn
Publisher:
ISBN:
Category : Radon
Languages : en
Pages : 34
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Book Description
The historical approach to the separation of radon from water is liberation of the radon from the sample by boiling under vacuum in the presence of a strong acid; flushing the liberated radon, with an inert gas, into an ionization chamber or an alpha proportional counters and measuring the collected activity. Such an analysis requires a manipulation time of approximately one hour, a waiting period of two to three hours before measurement to allow transitory equilibrium to be reached, and finally a measurement time, resulting in 4 to 6 hours for one analysis. In addition, specialized equipment including a vacuum train is required. If it is desired to count the alpha particles from radon and its daughters in a proportional counter, absorption trains to remove all oxygen, a poor counting gas, are required. The method presented herein requires only 20--25 minutes for a complete analysis and except for the beta counter utilizes standard laboratory equipment.
Author: R. B.. Jacobi
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author:
Publisher:
ISBN:
Category : Nuclear energy
Languages : en
Pages : 1162
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Book Description
Author:
Publisher:
ISBN:
Category : Radiochemical analysis
Languages : en
Pages : 98
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Book Description
Author: World Health Organization
Publisher: World Health Organization
ISBN: 9241547677
Category : Medical
Languages : en
Pages : 111
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Book Description
This handbook focuses on residential radon exposure from a public health point of view and provides detailed recommendations on reducing health risks from radon and sound policy options for preventing and mitigating radon exposure. The material in the handbook reflects the epidemiological evidence that indoor radon exposure is responsible for a substantial number of lung cancers in the general population. Information is provided on the selection of devices to measure radon levels and on procedures for the reliable measurement of these levels. Discussed also are control options for radon in new dwellings, radon reduction in existing dwellings as well as assessment of the costs and benefits of different radon prevention and remedial actions. Also covered are radon risk communication strategies and organization of national radon programs.--Publisher's description.
Author:
Publisher:
ISBN:
Category : Nuclear fuel elements
Languages : en
Pages : 120
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Book Description
'Feed materials' refers to U metal, fabricated into fuel elements but not clad, and UF6, both normal isotopic content, suitable for introduction into Pu-production reactors or gaseous diffusion cascades.
Author: Henry George Rieck
Publisher:
ISBN:
Category : Radon
Languages : en
Pages : 38
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
A high concentration of radon in groundwater has attracted recent attention as a precursor of seismic activity. We have constructed a system that extracts and counts radon gas from solid, liquid, and gas samples. The radon is extracted in a closed system onto activated charcoal. The desorbed radon is then measured in a phosphored acrylic cell by scintillation counting of gross alpha radiation. The efficiency of the total system (extraction plus counting) is 90 +- 3% or better. Compact design and sturdy construction make the system completely portable and well suited to field operations in remote loations. Results are given for radon and radium in groundwaters in the Livermore area.
