相关实验视频

Updated: May 5, 2026

Measuring Material Microstructure Under Flow Using 1-2 Plane Flow-Small Angle Neutron Scattering

Measuring Material Microstructure Under Flow Using 1-2 Plane Flow-Small Angle Neutron Scattering

Published on: February 6, 2014

在中国分裂中子源的多裂非常小角度中子散射仪器

Taisen Zuo^1,2, Zehua Han^1,2, Changli Ma^1,2

¹Spallation Neutron Source Science Center, Dongguan, 523803, People's Republic of China.

Journal of applied crystallography

|April 10, 2024

概括

在CSNS的新多裂非常小角度中子散射 (MS-VSANS) 仪器提供了高信号对噪声和广泛的q范围. 这种多功能仪器实现了先进中子散射研究的所有设计目标.

科学领域:

材料科学材料科学材料科学
凝聚物质物理学凝聚物质物理学
中子散射技术中子散射技术

背景情况:

中子散射是一种强大的技术,用于探测纳米级的材料结构.
非常小角度中子散射 (VSANS) 对于研究大型结构和不均性至关重要.
需要在仪器仪表方面取得进展,以提高分辨率和信号噪声比.

研究的目的:

介绍和描述中国分裂中子源 (CSNS) 的新型多裂非常小角度中子散射 (MS-VSANS) 仪器.
为了证明仪器能够覆盖扩展的散射向量大小范围的能力.
为了验证仪器在不同操作模式中的性能和多功能性.

主要方法:

安装和调试MS-VSANS仪器,其中包括一个曲的多通道光束曲器和旋转交换鼓.
集成可更换的多隙光束聚焦系统,用于扩展Q范围的访问.
使用高效的3He管探测器,用于中子偏振的双V腔,以及用于VSANS的气体电子倍数探测器.

主要成果:

该MS-VSANS仪器成功地覆盖了从0.00028到1.4 Å-1.1的广泛的散射向量大小范围.
实现了良好的信号噪声比,这对于详细的结构分析至关重要.
通过三个不同的模式证明了多功能性:常规SANS,极化SANS和VSANS.
使用直射光技术对比基准仪器进行经过验证的绝对散射强度测量.

结论:

在CSNS的MS-VSANS仪器是中子散射研究的最先进的设施.
它的灵活设计和广泛的功能满足并实现所有最初的设计目标.
该仪器准备在材料科学和凝聚物质物理学领域显著推进研究.

关键词:

这就是MS-VSANS.绝对强度的绝对强度.多隙非常小角度中子散射仪器.中子聚焦的中子聚焦.在极化中子中,有极化中子.斯帕拉化中子源是什么意思?

更多相关视频

Functionalization of Single-walled Carbon Nanotubes with Thermo-reversible Block Copolymers and Characterization by Small-angle Neutron Scattering

Functionalization of Single-walled Carbon Nanotubes with Thermo-reversible Block Copolymers and Characterization by Small-angle Neutron Scattering

Published on: June 1, 2016

$Studying Soft-matter and Biological Systems over a Wide Length-scale from Nanometer and Micrometer Sizes at the Small-angle Neutron Diffractometer KWS-2$ 11:27

Studying Soft-matter and Biological Systems over a Wide Length-scale from Nanometer and Micrometer Sizes at the Small-angle Neutron Diffractometer KWS-2

Published on: December 8, 2016

相关概念视频

Atomic Emission Spectroscopy: Instrumentation

Atomic Emission Spectroscopy: Instrumentation

The instrumentation of atomic emission spectrometry (AES) involves various components, including atomization devices that convert samples into gas-phase atoms and ions. There are two main types of atomization devices: continuous and discrete atomizers. Continuous atomizers, like plasmas and flames, introduce samples in a constant stream, while discrete atomizers inject individual samples using syringes or autosamplers. The most common discrete atomizer is the electrothermal atomizer.

Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation

Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation

Inductively coupled plasma (ICP) is the common plasma source used in atomic emission spectroscopy (AES), a technique that detects and analyzes various elements in a sample. This method is often called inductively coupled plasma atomic emission spectroscopy (ICP-AES).
There are three main types of inductively coupled plasma atomic emission spectroscopy (ICP-AES) instruments: sequential, simultaneous multichannel, and Fourier transform instruments, with the latter being less commonly used....