小型加速器驱动中子源中子衍射仪的伪随机时间调制技术

IF 16.4 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2023-01-20 DOI:10.3233/jnr-220042
F. Ott
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引用次数: 0

摘要

时间调制方法通常用于中子散射飞行时间仪器,它利用中子脉冲的时间结构来确定能量。过去,为了最大限度地利用中子通量或提高测量的能量分辨率,提出了复杂的时间调制方法。在本文中,我们探讨了这些方法提供的可能性,特别是使用统计斩波随机调制来提高安装在萨克雷ihi -中子can源周围的DIoGENE散射仪的性能。我们得出的结论是,当源在连续模式下操作时,统计斩波器的实施对于执行冶金研究(如应变扫描或相变研究)非常有效。随机调制技术可以很容易和有效地实现,因为现代计算机的高容量能够从大型表面像素化探测器进行高速数据处理。
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Pseudo-random time modulation technique for neutron diffraction instruments on compact accelerator-driven neutron sources
Time modulation methods are routinely used on neutron scattering time-of-flight instruments, which exploit the time structure of neutron pulses for energy determination. In the past, complex time modulation methods were proposed, either to maximize the neutron flux which can be used, or to increase the energy resolution of the measurements. In this article, we explore the possibilities offered by such methods and in particular random modulation using statistical choppers to improve the performances of the DIoGENE scattering instrument installed around the IPHI-neutron CANS source at Saclay. We conclude that when the source is operated in continuous mode, the implementation of a statistical chopper is very efficient to perform either metallurgical studies such as strain scanning or phase transition studies. Random modulation techniques may be easily and efficiently implemented because the high capacity of modern computers enables high-speed data processing from large surface pixelated detectors.
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来源期刊
Accounts of Chemical Research
Accounts of Chemical Research 化学-化学综合
CiteScore
31.40
自引率
1.10%
发文量
312
审稿时长
2 months
期刊介绍: Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
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