论文标题
使用实验室规模设置的单色计算机断层扫描：概念证明
Monochromatic computed tomography using laboratory-scale setup: proof-of-concept
论文作者
论文摘要
在本文中，我们使用实验室规模的Johann-type X射线吸收光谱仪基于常规的X射线管源来证明高度单色全场X射线吸收近边缘结构层造影仪的可行性。在此概念验证中，通过使用嵌入元素SE，Na $ _2 $ seo $ _3 $的幻影和Na $ _2 $ _2 $ SEO $ _4 $，我们表明，可以在不同氧化状态中的SE的三维分布可以映射并与phantom Matrix及其他用吸收和吸收边缘对比层映射。提出的方法允许使用低毛利率X射线源对MM级样品进行化学物种形成的体积分析，并代表了包括生物学和化学在内的许多领域的材料工程和研究的新分析工具。
In this article, we demonstrate the viability of highly monochromatic full-field X-ray absorption near edge structure based tomography using a laboratory-scale Johann-type X-ray absorption spectrometer based on a conventional X-ray tube source. In this proof-of-concept, by using a phantom embedded with elemental Se, Na$_2$SeO$_3$, and Na$_2$SeO$_4$, we show that the three-dimensional distributions of Se in different oxidation states can be mapped and distinguished from the phantom matrix and each other with absorption edge contrast tomography. The presented method allows for volumetric analyses of chemical speciation in mm-scale samples using low-brilliance X-ray sources, and represents a new analytic tool for materials engineering and research in many fields including biology and chemistry.
