Interlaced X-ray diffraction computed tomography.
Interlaced X-ray diffraction computed tomography.
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DOI：
10.1107/s160057671600131x
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发表时间：
2016-04-01
影响因子：
6.1
通讯作者：
Beale AM
中科院分区：
文献类型：
--
作者：
Vamvakeros A;Jacques SD;Di Michiel M;Senecal P;Middelkoop V;Cernik RJ;Beale AM
提出了一种新的x射线衍射计算机断层扫描实验数据收集策略，允许实验后在时间和空间分辨率之间进行选择。报道了一种x射线衍射计算机断层扫描数据收集策略，该策略允许在实验后在时间和空间分辨率之间进行选择。这种策略可以在相对较短的时间尺度上进行时间分辨研究，或者如果所研究的系统或其中的组件似乎不变，则可以改进空间分辨。该方法在原位研究Mn-Na-W /SiO2固定床反应器中的应用得到了验证。此外，还讨论了进一步改进数据收集策略的机会，以便在统计、时间和空间分辨率之间进行收集后调优。原则上，交错扫描方法也可应用于其他铅笔束层析技术，如x射线荧光计算机断层扫描、x射线吸收精细结构计算机断层扫描、对分布函数计算机断层扫描和层析扫描透射x射线显微镜。
A new data-collection strategy for Xray diffraction computed tomography experiments is presented that allows, post experiment, a choice between temporal and spatial resolution. An X-ray diffraction computed tomography data-collection strategy that allows, post experiment, a choice between temporal and spatial resolution is reported. This strategy enables time-resolved studies on comparatively short timescales, or alternatively allows for improved spatial resolution if the system under study, or components within it, appear to be unchanging. The application of the method for studying an Mn–Na–W/SiO2 fixed-bed reactor in situ is demonstrated. Additionally, the opportunities to improve the data-collection strategy further, enabling post-collection tuning between statistical, temporal and spatial resolutions, are discussed. In principle, the interlaced scanning approach can also be applied to other pencil-beam tomographic techniques, like X-ray fluorescence computed tomography, X-ray absorption fine structure computed tomography, pair distribution function computed tomography and tomographic scanning transmission X-ray microscopy.