Fundamental Physics with Pulsed Neutron Beams

Fundamental Physics with Pulsed Neutron Beams PDF

Author: Christopher R. Gould

Publisher: World Scientific

Published: 2001

Total Pages: 268

ISBN-13: 9810246676

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Low energy neutron beams are used to address many questions in nuclear physics, particle physics and astrophysics. The scientific issues include elucidating the nature of time reversal noninvariance; understanding the origin of the baryon asymmetry in the Universe; describing the weak interaction between quarks and between nucleons; understanding the origin of the elements in stellar and big bang nucleosynthesis.This book summarizes how spallation neutron sources work and discuss the advantages of pulsed beams in reducing systematic errors in precision measurements. It also describes recent breakthroughs in ultracold neutron production, together with the physics that will be addressed by the new generation of intense neutron sources.

Advances in Neutron Optics

Advances in Neutron Optics PDF

Author: Maria L. Calvo

Publisher: CRC Press

Published: 2019-12-05

Total Pages: 253

ISBN-13: 1000727602

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Neutron optics studies the interactions of a beam of slow neutrons with matter. This book updates various advances on neutron optics. There will be a focus on the very active topics of neutron imaging (NI) and neutron spin optics (NSO). The book will also present applications of neutron beams in biomedicine, such as Boron Neutron Capture Therapy (BNCT) and related techniques. Features: Discusses diffraction and interference of slow neutrons, including computational approaches Reviews neutron imaging (NI) and neutron spin optics (NSO) Treats two major sources of slow neutron beams: (1) fission reactions at nuclear reactors and (2) collisions in particle accelerators (small ones, spallation sources) of charged particle beams with targets of heavy atoms Selects subjects on fundamental quantum aspects of slow neutrons and on confined propagation and waveguiding thereof Updates slow neutron beams and BNCT

Astrophysics, Symmetries, and Applied Physics at Spallation Neutron Sources

Astrophysics, Symmetries, and Applied Physics at Spallation Neutron Sources PDF

Author: Paul E Koehler

Publisher: World Scientific

Published: 2002-12-26

Total Pages: 264

ISBN-13: 9814486868

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The spallation neutron source (SNS) being built at the Oak Ridge National Laboratory (ORNL) will be by far the highest flux pulsed source of epithermal neutrons in the world when it comes on line in 2006. Although the main thrust of the science program at the SNS will be materials science, the facility could provide outstanding opportunities for research in nuclear astrophysics, fundamental symmetries, and applied nuclear physics. To review the current status of these fields and to begin to assemble the scientific case and the community of researchers for future experiments at the SNS, a workshop on “Astrophysics, Symmetries, and Applied Physics” was held in March 2002 at the ORNL. Over 60 scientists, representing 11 US and 4 foreign universities as well as many national laboratories around the world, participated in the workshop. The proceedings describe the current state of research in those fields and the future opportunities at the SNS. Contents:The Detector for Advanced Neutron Capture Experiments at LANSCE (J L Ullmann et al.)Recent Astrophysics Results from ORELA and Possible Future Experiments at ORELA and SNS (P E Koehler)Applied Nuclear Physics at Spallation Neutron Sources (P Oblozinzky)Aluminum Data Measurements and Evaluation for Criticality Safety Applications (L C Leal et al.)Measurement of Neutron Capture Cross Sections of Long-lived Fission Products (H Harada et al.)Radioactive Target Production at RIA (J C Blackmon)Parity Violation in Epithermal Neutron Resonances (G E Mitchell et al.)Violation of Fundamental Symmetries in Resonance Neutron Induced Fission (A Barabanov et al.)Time Reversal Tests with Epithermal Neutrons (C R Gould)Neutronic Characteristics of the Spallation Neutron Source (P D Ferguson et al.)and other papers Readership: Graduate students, researchers and engineers in nuclear astrophysics, nuclear physics, nuclear engineering, applied physics and nuclear medicine. Keywords:Nuclear Astrophysics;Nuclear Physics;Transmutation

Strangeness and Spin in Fundamental Physics

Strangeness and Spin in Fundamental Physics PDF

Author: M. Anselmino

Publisher: IOS Press

Published: 2008-07-14

Total Pages: 496

ISBN-13: 1607503484

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Strangeness and Spin in Fundamental Physics is dedicated to the discussion of the role played by two subtle and somehow puzzling quantum numbers, the strangeness and the spin, in fundamental physics. They both relate to basic properties of the fundamental quantum field theories describing strong and electro-weak interactions and to their phenomenological applications. In some instances, like the partonic spin structure of the proton, they are deeply correlated. The many puzzling results recently obtained by measuring several spin asymmetries have stimulated gigantic progresses in the study of the spin structure of protons and neutrons. Intense theoretical activity has discovered new features of non-perturbative QCD, like strong correlations between the spin and the intrinsic motions of quarks inside the nucleons. The purpose of this publication is that of providing a complete, updated and critical account of the most recent and relevant discoveries in the above fields, both from the experimental and theoretical sides.

Fundamental Research with Polarized Slow Neutrons

Fundamental Research with Polarized Slow Neutrons PDF

Author: P. A. Krupchit︠s︡kiĭ

Publisher: Springer

Published: 1987-04-30

Total Pages: 160

ISBN-13:

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In the last twenty years polarized beams of slow neutrons have been used effectively in fundamental research in nuclear physics. Parity violation in nuclear fission and neutron optics was discoverd as well as the nuclear precession of neutrons and the coherent interference of spin channels in neutron capture by nuclei. Furthermore, these methods helped to understand better the neutron`s electric dipole moment and its beta decay. This book gives a thorough introduction to these experimental methods including the most recent techniques of generating and analyzing polarized neutral beams. It clearly shows the close relationship between elementary particle physics and nuclear physics, in particular in the section dealing with the effects caused by weak interactions. Special attention is paid to experiments which investigate the violation of quantum mechanical conservation laws. The book not only addresses specialists but also those interested in the foundations of elementary particle and nuclear physics. It is well suited as additional reading for students.

Capture Gamma-Ray Spectroscopy and Related Topics

Capture Gamma-Ray Spectroscopy and Related Topics PDF

Author: J Kvasil

Publisher: World Scientific

Published: 2003-06-02

Total Pages: 896

ISBN-13: 9814485837

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This volume is a collection of invited talks, oral contributions and poster contributions devoted to advances in gamma-ray spectroscopy of various capture reactions. In agreement with the trend of previous meetings in the series, the symposium paid special attention to theoretical and experimental studies of nuclear structure at low energies and to nuclear astrophysics. Among the other topics covered are: statistical properties of nuclei and other quantum many-body systems, fundamental physics, nuclear data, practical application of capture reactions, and new techniques and facilities for capture gamma-ray spectroscopy. Contents:Nuclear StructureNuclear ReactionsNuclear AstrophysicsStatistical Properties of NucleiExperimental FacilitiesNuclear DataApplicationsFundamental Physics Readership: Graduate students and researchers in nuclear physics. Keywords:Gamma-Ray Spectroscopy;Nuclear Reactions;Symmetries in Nuclei;Nuclear Structure;Nuclear Astrophysics;Statistical Properties of Nuclei;Nuclear Data

Fundamental Research with Polarized Slow Neutrons

Fundamental Research with Polarized Slow Neutrons PDF

Author: Pyotr Aleksandrovich Krupchitsky

Publisher: Springer

Published: 1987

Total Pages: 0

ISBN-13: 9783642525018

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In the last twenty years polarized beams of slow neutrons have been used effectively in fundamental research in nuclear physics. Parity violation in nuclear fission and neutron optics was discoverd as well as the nuclear precession of neutrons and the coherent interference of spin channels in neutron capture by nuclei. Furthermore, these methods helped to understand better the neutron`s electric dipole moment and its beta decay. This book gives a thorough introduction to these experimental methods including the most recent techniques of generating and analyzing polarized neutral beams. It clearly shows the close relationship between elementary particle physics and nuclear physics, in particular in the section dealing with the effects caused by weak interactions. Special attention is paid to experiments which investigate the violation of quantum mechanical conservation laws. The book not only addresses specialists but also those interested in the foundations of elementary particle and nuclear physics. It is well suited as additional reading for students.

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