The multipurpose time-of-flight neutron reflectometer "Platypus" at Australia's OPAL reactor
The multipurpose time-of-flight neutron reflectometer "Platypus" at Australia's OPAL reactor
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DOI：
10.1016/j.nima.2010.12.075
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发表时间：
2011-03-11
影响因子：
1.4
通讯作者：
Klose, F.
中科院分区：
文献类型：
--
作者：
James, M.;Nelson, A.;Klose, F.
在这份手稿中，我们描述了在澳大利亚悉尼的20兆瓦OPAL反应堆的鸭嘴兽飞行时间中子反射计的主要组成部分。Platypus是一款多用途光谱仪，用于固体薄膜、吸附在固液界面和自由液体表面的材料的表征。它也有能力利用自旋极化中子研究磁性薄膜。鸭嘴兽利用白色中子束（λ =2-20埃），该中子束使用硼涂层圆盘斩波器对进行脉冲，从而提供定制脉冲的波长分辨率以适应所研究的系统的能力。超镜光学元件用于聚焦、偏转或自旋极化宽带中子束，并给出了每种结构的典型入射谱。一系列的中子反射率数据集，表明该谱仪的质量和灵活性。最小反射率值
In this manuscript we describe the major components of the Platypus time-of-flight neutron reflectometer at the 20 MW OPAL reactor in Sydney, Australia. Platypus is a multipurpose spectrometer for the characterisation of solid thin films, materials adsorbed at the solid-liquid interface and free-liquid surfaces. It also has the capacity to study magnetic thin films using spin-polarised neutrons. Platypus utilises a white neutron beam (lambda=2-20 angstrom) that is pulsed using boron-coated disc chopper pairs; thus providing the capacity to tailor the wavelength resolution of the pulses to suit the system under investigation. Supermirror optical components are used to focus, deflect or spin-polarise the broad bandwidth neutron beams, and typical incident spectra are presented for each configuration. A series of neutron reflectivity datasets are presented, indicating the quality and flexibility of this spectrometer. Minimum reflectivity values of