Materials Research Using Cold Neutrons At Pulsed Neutron Sources
Materials Research Using Cold Neutrons At Pulsed Neutron Sources

Author: Chun Keung Loong

Publisher: World Scientific

Published: 1999-04-29

Total Pages: 245

ISBN-13: 9814544035

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The applications of the use of cold neutrons for condensed matter research at accelerator-based spallation sources are less well-known than that of the use of cold neutrons at reactor sources. This book represents the outcome of the first international workshop on “Materials Research Using Cold Neutrons at Pulsed Sources”. It consists of overviews of the present status and future trends in research opportunities using cold neutrons, as well as topical papers focusing on the areas of small-angle neutron scattering, reflectivity and spectroscopic studies of a rich variety of materials, from adsorbed molecules to thin films to coal to metallic glasses. These papers will benefit researchers who are interested in the characterization of microscopic properties of advanced materials.

Instrumentation Using Cold Neutrons at Pulsed Neutron Sources
Instrumentation Using Cold Neutrons at Pulsed Neutron Sources

Author:

Publisher:

Published: 1997

Total Pages: 10

ISBN-13:

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This paper discusses some basic aspects of instrumentation for cold neutrons, with emphasis on conditions peculiar to pulsed sources. It also indicates the conditions under which pulsed source instruments can be most effective for cold neutron research, and presents a brief report on the status of cold neutron instrumentation at pulsed sources.

Cold Neutron Sources: Practical Considerations and Modern Research
Cold Neutron Sources: Practical Considerations and Modern Research

Author: International Atomic Energy Agency

Publisher: International Atomic Energy Agency

Published: 2024-01-24

Total Pages: 0

ISBN-13: 9789201394231

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This Safety Report provides guidance, targeted towards States newly embarking upon a nuclear power plant programme, on the licensing process and associated procedures needed during for the construction, commissioning and operation stages of a nuclear power plant, so that the applicant complies with national regulations in line with the internationally recognized safety principles and requirements throughout these stages. The publication elaborates on the generic guidance provided in IAEA Safety Standards Series No. SSG-12, Licensing Process for Nuclear Installations, and gives supplementary practical guidance for nuclear power plants.

Fundamental Physics with Pulsed Neutron Beams
Fundamental Physics with Pulsed Neutron Beams

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.

"Development and Neutronic Validation of Pelletized Cold and Very Cold Moderators for Pulsed Neutron Sources" Phase II Final Report

Author:

Publisher:

Published: 2012

Total Pages: 57

ISBN-13:

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Intense beams of cold neutrons are produced at several DOE facilities and are used by researchers to study the microscopic structure of materials. Energetic neutrons are produced by a high energy proton beam impacting a target. The fast neutrons are converted to the desired cold neutrons passing through a cryogenic moderator vessel, presently filled with dense cold hydrogen gas. Moderators made from solid methane have demonstrated superior performance to the hydrogen moderators but cannot be implemented on high power sources such as the SNS due to the difficulty of removing heat from the solid blocks of methane. Cryogenic Applications F, Inc has developed the methane pellet formation and transport technologies needed to produce a hydrogen cooled solid methane pellet moderator, potentially capable of being used in a high power spallation neutron facility. Such a methane pellet moderator could double the brightness of the neutron beam. Prior to this work a methane pellet moderator had not been produced or studied. The Indiana University LENS facility is a small pulsed neutron source used in part to study and develop cold neutron moderators. In this project cold neutrons were produced in a solid methane pellet moderator and analyzed with the LENS facility diagnostics. The results indicated that the neutron beam formed by the pellet moderator was similar to that of a solid methane block moderator.

Advancing Materials Science Using Neutrons at Oak Ridge National Laboratory
Advancing Materials Science Using Neutrons at Oak Ridge National Laboratory

Author:

Publisher:

Published: 2014

Total Pages:

ISBN-13:

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Jack Carpenter, pioneer of accelerator-based pulsed spallation neutron sources, talks about neutron science at Oak Ridge National Laboratory (ORNL) and a need for a second target station at the Spallation Neutron Source (SNS). ORNL is the Department of Energy's largest multiprogram science and energy laboratory, and is home to two scientific user facilities serving the neutron science research community: the High Flux Isotope Reactor (HFIR) and SNS. HFIR and SNS provide researchers with unmatched capabilities for understanding the structure and properties of materials, macromolecular and biological systems, and the fundamental physics of the neutron. Neutrons provide a window through which to view materials at a microscopic level that allow researchers to develop better materials and better products. Neutrons enable us to understand materials we use in everyday life. Carpenter explains the need for another station to produce long wavelength neutrons, or cold neutrons, to answer questions that are addressed only with cold neutrons. The second target station is optimized for that purpose. Modern technology depends more and more upon intimate atomic knowledge of materials, and neutrons are an ideal probe.

Research Infrastructures
Research Infrastructures

Author: Kurt Clausen

Publisher:

Published: 2001

Total Pages: 44

ISBN-13:

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Recoge : 1.Foreword -- 2.Executive summary -- 3.European facilities for research with neutron beams -- 4.European coordination -- 5.The neutron research infrastructre from the perspective of the users (ENSA) -- 6.The future -- 7.Location and data of research infrastructures : neutron sources -- 8.Access to research infrastructures.