小角度X射线散射（SAXS）样品厚度的优化

IF 1.3 4区工程技术 Q4 CHEMISTRY, ANALYTICAL

Instrumentation Science & Technology Pub Date : 2022-07-18 DOI:10.1080/10739149.2022.2099417

Haijuan Wu, Rong-mei Chen, Zhihong Li

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引用次数: 1

摘要

摘要在x射线小角散射(SAXS)实验中，为了获得最大信噪比和最佳统计量，存在一个最佳样品厚度。在实际应用中，由于某些条件，样品厚度可能会偏离最佳值。对于较厚的样本，可能会出现散射数据的涂抹和等效的样本位置来计算散射向量。计算表明，对于单分散和多分散体系，样品厚度对SAXS的影响相似。通过定性和定量分析确定了等效样品位置与辐照样品中心的偏差。

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Optimization of sample thickness for small angle X-ray scattering (SAXS)

Abstract In small angle X-ray scattering (SAXS) experiments, there exists an optimal sample thickness to obtain measurements with the maximum signal-to-noise ratio and best statistics. In practice, the sample thickness may deviate from the optimal value due to certain conditions. For thick samples, smearing may appear for the scattering data and an equivalent sample position to compute the scattering vector. Calculations show that the sample thickness has a similar effect on SAXS for monodisperse and polydisperse systems. Qualitative and quantitative analysis has been performed to determine the deviation of equivalent sample position from the irradiated sample center.

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来源期刊

Instrumentation Science & Technology 工程技术-分析化学

CiteScore

3.50

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： Instrumentation Science & Technology is an internationally acclaimed forum for fast publication of critical, peer reviewed manuscripts dealing with innovative instrument design and applications in chemistry, physics biotechnology and environmental science. Particular attention is given to state-of-the-art developments and their rapid communication to the scientific community. Emphasis is on modern instrumental concepts, though not exclusively, including detectors, sensors, data acquisition and processing, instrument control, chromatography, electrochemistry, spectroscopy of all types, electrophoresis, radiometry, relaxation methods, thermal analysis, physical property measurements, surface physics, membrane technology, microcomputer design, chip-based processes, and more. Readership includes everyone who uses instrumental techniques to conduct their research and development. They are chemists (organic, inorganic, physical, analytical, nuclear, quality control) biochemists, biotechnologists, engineers, and physicists in all of the instrumental disciplines mentioned above, in both the laboratory and chemical production environments. The journal is an important resource of instrument design and applications data.