Alpha Radioactivity of Nuclides with Atomic Numbers Less Than 83 PDF Download
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Author: John Oscar Rasmussen
Publisher:
ISBN:
Category : Alpha rays
Languages : en
Pages : 56
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Book Description
Author: John Oscar Rasmussen
Publisher:
ISBN:
Category : Alpha rays
Languages : en
Pages : 56
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Book Description
Author: John Oscar Jr Rasmussen
Publisher:
ISBN:
Category :
Languages : en
Pages : 113
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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:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Correlations of alpha-decay energies in terms of mass number and atomic number have been made for all of the alpha-emitting species now numbering over 100. For each element isotopes show increase in alpha-energy with decrease in mass number except in the region of 126 neutrons where there is an explainable reversal. This reversal has the effect of creating a region of relatively low alpha-energy and long half-life at low mass numbers for such elements as astatine, emanation, francium, and possibly higher elements as had been noted already for bismuth and polonium. Methods and examples of using alpha-decay data to define the energy surface in the heavy element region are discussed. The regularities in alpha-decay are used for predictions of nuclear properties including prediction of the beta-stable nuclides among the heavy elements. The half-life vs. energy correlations show that the even-even nuclides conform well with existing alpha-decay theory, but all nuclear types with odd nucleons show prohibited decay. The reason for this prohibition is not found in spin changes in the alpha-emission but in the assembly of the components of the alpha particle, and this theory is discussed further in terms of observations made on nuclides having two or more alpha-groups. Using most of the even-even nuclei to define 'normal nuclear radius' calculations are now able to show the shrinkage in the regions of lead and of 126 neutrons to amount to about 10%. The much greater change in 'effective radius' for bismuth isotopes can be dissociated into the effects of odd nucleons superimposed on the actual decrease in nuclear radius. The simple expression r = 1.48 A13 · 10−13 cm seems to fit the data for the even-even nuclei outside of the region of 126 neutrons better than more complex functions.
Author: Bruce Averill
Publisher:
ISBN: 9780321413703
Category : Chemistry
Languages : en
Pages : 1233
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Book Description
Emphasises on contemporary applications and an intuitive problem-solving approach that helps students discover the exciting potential of chemical science. This book incorporates fresh applications from the three major areas of modern research: materials, environmental chemistry, and biological science.
Author:
Publisher:
ISBN:
Category : Nuclear energy
Languages : en
Pages : 978
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Author: Paul Flowers
Publisher:
ISBN: 9781947172623
Category : Chemistry
Languages : en
Pages : 0
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Book Description
Chemistry 2e is designed to meet the scope and sequence requirements of the two-semester general chemistry course. The textbook provides an important opportunity for students to learn the core concepts of chemistry and understand how those concepts apply to their lives and the world around them. The book also includes a number of innovative features, including interactive exercises and real-world applications, designed to enhance student learning. The second edition has been revised to incorporate clearer, more current, and more dynamic explanations, while maintaining the same organization as the first edition. Substantial improvements have been made in the figures, illustrations, and example exercises that support the text narrative. Changes made in Chemistry 2e are described in the preface to help instructors transition to the second edition.
Author: Morris Hein
Publisher: John Wiley & Sons
ISBN: 1119083907
Category : Science
Languages : en
Pages : 530
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Book Description
This text is an unbound, three hole punched version. Used by over 750,000 students, Foundations of College Chemistry, Binder Ready Version, 15th Edition is praised for its accuracy, clear no-nonsense approach, and direct writing style. Foundations’ direct and straightforward explanations focus on problem solving making it the most dependable text on the market. Its comprehensive scope, proven track record, outstanding in-text examples and problem sets, were all designed to provide instructors with a solid text while not overwhelming students in a difficult course. Foundations fits into the prep/intro chemistry courses which often include a wide mix of students from science majors not yet ready for general chemistry, allied health students in their 1st semester of a GOB sequence, science education students (for elementary school teachers), to the occasional liberal arts student fulfilling a science requirement. Foundations was specifically designed to meet this wide array of needs.
Author: Michael F. L'Annunziata
Publisher: Academic Press
ISBN: 0123848733
Category : Medical
Languages : en
Pages : 1420
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Book Description
Authoritative reference providing the principles, practical techniques, and procedures for the accurate measurement of radioactivity.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 630
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Book Description
