Journal of Neutron Research最新文献_第9页

Development of high intensity neutron source at the European Spallation Source 高强度中子源在欧洲散裂源的发展

IF 1.1

Journal of Neutron Research Pub Date : 2020-02-10 DOI: 10.3233/jnr-200159

V. Santoro, K. Andersen, D. Dijulio, E. Klinkby, T. Miller, D. Milstead, G. Muhrer, M.Stroble, A. Takibayev, L. Zanini, O. Zimmer

{"title":"Development of high intensity neutron source at the European Spallation Source","authors":"V. Santoro, K. Andersen, D. Dijulio, E. Klinkby, T. Miller, D. Milstead, G. Muhrer, M.Stroble, A. Takibayev, L. Zanini, O. Zimmer","doi":"10.3233/jnr-200159","DOIUrl":"https://doi.org/10.3233/jnr-200159","url":null,"abstract":"The European Spallation Source being constructed in Lund, Sweden will provide the user community with a neutron source of unprecedented brightness. By 2025, a suite of 15 instruments will be served by a high-brightness moderator system placed above the spallation target. The ESS infrastructure, consisting of the proton linac, the target station, and the instrument halls, allows for implementation of a second source below the spallation target. We propose to develop a second neutron source with a high-intensity moderator able to (1) deliver a larger total cold neutron flux, (2) provide high intensities at longer wavelengths in the spectral regions of Cold (4–10 Å), Very Cold (10–40 Å), and Ultra Cold (several 100 Å) neutrons, as opposed to Thermal and Cold neutrons delivered by the top moderator. Offering both unprecedented brilliance, flux, and spectral range in a single facility, this upgrade will make ESS the most versatile neutron source in the world and will further strengthen the leadership of Europe in neutron science. The new source will boost several areas of condensed matter research such as imaging and spin-echo, and will provide outstanding opportunities in fundamental physics investigations of the laws of nature at a precision unattainable anywhere else. At the heart of the proposed system is a volumetric liquid deuterium moderator. Based on proven technology, its performance will be optimized in a detailed engineering study. This moderator will be complemented by secondary sources to provide intense beams of Very- and Ultra-Cold Neutrons.","PeriodicalId":44708,"journal":{"name":"Journal of Neutron Research","volume":"1 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2020-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.3233/jnr-200159","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70093148","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 13

Routines for optimizing neutron scattering instruments with McStas 用McStas优化中子散射仪器的例程

IF 1.1

Journal of Neutron Research Pub Date : 2020-01-29 DOI: 10.3233/jnr-190117

V. Laliena, M. V. Alvarez, J. D. Campo

引用次数: 2

Advances in the use of Paris-Edinburgh presses for high pressure neutron scattering 利用巴黎-爱丁堡压机进行高压中子散射的进展

IF 1.1

Journal of Neutron Research Pub Date : 2020-01-29 DOI: 10.3233/jnr-190120

S. Klotz, T. Hansen, E. Lelièvre-Berna, L. Amand, J. Maurice, C. Payre

引用次数: 6

An introduction to SECoP – the sample environment communication protocol 介绍SECoP -示例环境通信协议

IF 1.1

Journal of Neutron Research Pub Date : 2020-01-29 DOI: 10.3233/jnr-190143

K. Kiefer, L. Rossa, Frank Wutzler, Niklas Ektröm, Anders Pettersson, E. Faulhaber, Markus Zolliker

引用次数: 2

A fast-cooling mode for blue series furnaces 蓝色系列炉的快速冷却模式

IF 1.1

Journal of Neutron Research Pub Date : 2020-01-29 DOI: 10.3233/jnr-190128

C. Goodway, P. Mcintyre, A. Sears, Nadir Belkhier, G. Burgess, O. Kirichek, E. Lelièvre-Berna, F. Marchal, Sébastien Turc, S. Wakefield

引用次数: 0

Next generation equipment for muon chemistry research 下一代介子化学研究设备

IF 1.1

Journal of Neutron Research Pub Date : 2020-01-29 DOI: 10.3233/jnr-190118

M. Aramini, S. Cottrell, J. Peck, K. Yokoyama

引用次数: 1

Neutron activation properties of PE-B4C-concrete assessed by measurements and simulations 通过测量和模拟评价pe - b4c混凝土的中子活化性能

IF 1.1

Journal of Neutron Research Pub Date : 2020-01-29 DOI: 10.3233/jnr-190126

D. Hajdú, E. Dian, E. Klinkby, C. Cooper-Jensen, J. Osán, P. Zagyvai

引用次数: 4

Coupling NMR to SANS: Addressing at once structure and dynamics in soft matter 核磁共振与SANS的耦合：同时解决软物质的结构和动力学问题

IF 1.1

Journal of Neutron Research Pub Date : 2020-01-29 DOI: 10.3233/jnr-190114

R. Oliveira-Silva, Agathe Belime, Clémence Le Coeur, Alexis Chennevière, A. Hélary, F. Cousin, P. Judeinstein, D. Sakellariou, J. Zanotti

{"title":"Coupling NMR to SANS: Addressing at once structure and dynamics in soft matter","authors":"R. Oliveira-Silva, Agathe Belime, Clémence Le Coeur, Alexis Chennevière, A. Hélary, F. Cousin, P. Judeinstein, D. Sakellariou, J. Zanotti","doi":"10.3233/jnr-190114","DOIUrl":"https://doi.org/10.3233/jnr-190114","url":null,"abstract":". In soft condensed matter, Small Angle Neutron Scattering (SANS) is a central tool to probe structures with characteristic sizes ranging from 1 to 100 nm. However, when used as a standalone technique, the dynamic properties of the sample are not accessible. Nuclear Magnetic Resonance (NMR) is a versatile technique which can easily probe dynamical information. Here, we report on the coupling of a low-ﬁeld NMR system to a SANS instrument. We show that this original set-up makes it possible to obtain structural information and to simultaneously extract in situ on a same sample, long-range translational diffusion coefﬁcient, T 1 and T 2 nuclear spin relaxation times. Such a feature is of major interest when a sample experiences a transient physical state or evolves rapidly. We illustrate the capabilities of alliancing these experimental methods by following the critical temperature-induced phase separation of a concentrated Poly(Methacrylic Acid) solution at its Lower Critical Solution Temperature. The characteristic size related to the domain growth of the polymer-rich phase of the gel is monitored by the evolution of the SANS spectra, while the dynamics of the sol phase (H 2 O and polymer) is simultaneously characterized by NMR by measuring T 1 , T 2 and the diffusion coefﬁcient. Great care has been taken to design a cell able to optimize the thermalization of the sample and in particular its equilibration time. Details are given on the sample cell speciﬁcally designed and manufactured for these experiments. The acquisition time needed to reach good signal-to-noise ratios, for both NMR and SANS, match: it is of the order of one hour. Altogether, we show that in situ low-ﬁeld NMR/SANS coupling the NMR is meaningful and is a promising experimental approach.","PeriodicalId":44708,"journal":{"name":"Journal of Neutron Research","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2020-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.3233/jnr-190114","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46170939","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

McStas and Scatter Logger driven calculations of prompt gamma shielding for neutron guides McStas和Scatter Logger驱动中子导管的即时伽马屏蔽计算

IF 1.1

Journal of Neutron Research Pub Date : 2020-01-29 DOI: 10.3233/jnr-190123

R. Kolevatov

引用次数: 2

Low-background materials for high pressure cells used in inelastic neutron scattering experiments 用于非弹性中子散射实验的高压电池的低本底材料

IF 1.1

Journal of Neutron Research Pub Date : 2020-01-29 DOI: 10.3233/jnr-190115

M. Kibble, V. Laliena, C. Goodway, E. Lelièvre-Berna, K. Kamenev, S. Klotz, O. Kirichek

引用次数: 3