FIGARO: The new horizontal neutron reflectometer at the ILL
FIGARO: The new horizontal neutron reflectometer at the ILL
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DOI：
10.1140/epjp/i2011-11107-8
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发表时间：
2011-11-01
影响因子：
3.4
通讯作者：
Fragneto, G.
中科院分区：
文献类型：
--
作者：
Campbell, R. A.;Wacklin, H. P.;Fragneto, G.
流体界面掠角反射仪(Figaro)是法国格勒诺布尔劳厄-朗之万所的新型水平中子反射仪。它是一种多功能、高通量的飞行时间仪器，其特点适合在自由气液界面和埋藏的液/液和固/液界面上进行一系列软凝聚物质、化学、物理和生物的研究。大多数实验利用同位素对比度变化来确定表层的结构和组成。多个斩波片允许可变波长分辨率，松散分辨率选项增加了可用于薄膜快速动力学研究的中子通量，并提高了从需要多个对比度测量的复杂样品中获取数据的效率。可以从地平线以下或地平线以上接近界面。该仪器配备了一系列样品环境，包括自由液体吸附槽、朗缪尔槽、溢流筒和一系列固体/液体样品池。Figaro于2009年4月作为用户乐器推出，自那以来它的成功一直在稳步增加。这篇文章包括对科学案例的介绍，关于仪器组件和性能的详细章节，对迄今为止开发的标准样品环境的描述，以及一些精选的早期科学亮点。
Fluid Interfaces Grazing Angles ReflectOmeter (FIGARO) is the new horizontal neutron reflectometer at the Institut Laue-Langevin, Grenoble, France. It is a versatile, high-flux time-of-flight instrument with features suitable for a range of studies in soft condensed matter, chemistry, physics and biology both at free air/liquid interfaces and buried liquid/liquid and solid/liquid interfaces. Most of the experiments exploit isotopic contrast variation to determine the structure and composition of surface layers. Multiple chopper discs allow variable wavelength resolution, with the loose-resolution options increasing the available neutron flux for fast kinetic studies of thin films and improving the data acquisition efficiency from complex samples requiring multiple contrast measurements. It is possible to approach the interface with neutrons from below or above the horizon. The instrument is equipped with a range of sample environments including free liquid adsorption troughs, a Langmuir trough, an overflowing cylinder and a range of solid/liquid sample cells. FIGARO was launched as a user instrument in April 2009 and its success has been steadily increasing since. This article includes an introduction to the scientific case, detailed sections on the instrument components and performance, and descriptions of standard sample environments developed to date as well as some selected early scientific highlights.