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Languages : en
Pages :
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Languages : en
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Author: Jean-Pierre Lees
Publisher:
ISBN:
Category :
Languages : en
Pages : 10
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On behalf of the BABAR and Belle collaborations, the authors report on the measurement of the angle {gamma} and of the sum of angles 2{beta} + {gamma} of the Unitarity Triangle.
Author: K. Siegbahn
Publisher: Elsevier
ISBN: 0444596992
Category : Science
Languages : en
Pages : 915
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Book Description
Alpha-, Beta- and Gamma-Ray Spectroscopy Volume 1 offers a comprehensive account of radioactivity and related low-energy phenomena. It summarizes progress in the field of alpha-, beta- and gamma-ray spectroscopy, including the discovery of the non-conservation of parity, as well as new experimental methods that elucidate the processes of weak interactions in general and beta-decay in particular. Comprised of 14 chapters, the book presents experimental methods and theoretical discussions and calculations to maintain the link between experiment and theory. It begins with a discussion of the interaction of electrons and alpha particles with matter. The book explains the elastic scattering of electrons by atomic nuclei and the interaction between gamma-radiation and matter. It then introduces topic on beta-ray spectrometer theory and design and crystal diffraction spectroscopy of nuclear gamma rays. Moreover, the book discusses the applications of the scintillation counter; proportional counting in gases; and the general processes and procedures used in determining disintegration schemes through a study of the beta- and gamma-rays emitted. In addition, it covers the nuclear shell model; collective nuclear motion and the unified model; and alpha-decay conservation laws. The emissions of gamma-radiation during charged particle bombardment and from fission fragments, as well as the neutron-capture radiation spectroscopy, are also explained. Experimentalists will find this book extremely useful.
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309075599
Category : Science
Languages : en
Pages : 211
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The Committee on Dosimetry for the Radiation Effects Research Foundation (RERF) was set up more than a decade ago at the request of the U.S. Department of Energy. It was charged with monitoring work and experimental results related to the Dosimetry System 1986 (DS86) used by RERF to reconstruct the radiation doses to the survivors in Hiroshima and Nagasaki. At the time it was established, DS86 was believed to be the best available dosimetric system for RERF, but questions have persisted about some features, especially the estimates of neutrons resulting from the Hiroshima bomb. This book describes the current situation, the gamma-ray dosimetry, and such dosimetry issues as thermal-neutron discrepancies between measurement and calculation at various distances in Hiroshima and Nagasaki. It recommends approaches to bring those issues to closure and sets the stage for the recently convened U.S. and Japan Working Groups that will develop a new dosimetry for RERF. The book outlines the changes relating to DS86 in the past 15 years, such as improved numbers that go into, and are part of, more sophisticated calculations for determining the radiations from bombs that reach certain distances in air, and encourages incorporation of the changes into a revised dosimetry system.
Author: Jerry A. Sawyer
Publisher:
ISBN:
Category : Nuclear counters
Languages : en
Pages : 204
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Author: Emerson G. Funk Jr.
Publisher:
ISBN:
Category :
Languages : en
Pages : 105
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Author:
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Category : Marine engineering
Languages : en
Pages : 1082
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Category :
Languages : en
Pages :
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We show that the CKM phase 2[beta]+P[gamma] can be extracted from measurement of the time dependent rates in the decays[bar B][sup 0][yields] D[sup (*)[+-]] M[sup[-+]], where M= a[sub 0], [pi](1300), b[sub 1], a[sub 2], [pi][sub 2], [rho][sub 3]. These channels have a large asymmetry between decays of[bar B][sup 0] and B[sup 0] into the same final state. Even though the branching ratios are small, their sensitivity to[gamma] can be competitive with decays into D[sup (*)] and ([pi], [rho], a[sub 1]).
Author: E. N. Jensen
Publisher:
ISBN:
Category : Beta ray spectrometry
Languages : en
Pages : 6
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Author: Charles D. Yaffe
Publisher:
ISBN:
Category : Industrial hygiene
Languages : en
Pages : 1272
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