多图像X射线干涉仪模块：I. 设计理念与细间距狭缝的概念验证实验
Multi-Image X-ray Interferometer Module: I. design concept and proof-of-concept experiments with fine-pitch slits
AI总结：
本研究提出新型X射线成像系统MIXIM，采用细间距狭缝与高分辨率CMOS传感器，通过实验验证其能在紧凑尺寸下实现高角分辨率，且具备二维成像能力与高可扩展性。
摘要：
我们提出了一种新型X射线成像系统——多图像X射线干涉仪模块（Multi-Image X-ray Interferometer Module, MIXIM），即使系统尺寸很小，也能实现极高的角分辨率。MIXIM由等间距的多狭缝和一个X射线探测器组成，其角分辨率与二者之间的距离成反比。本文报告了我们采用新引入的、空间分辨率达2.5 μm的CMOS传感器开展的MIXIM评估实验。我们此前使用MIXIM原型的实验仅限于一维成像，更重要的是，受限于所采用的像素尺寸为4.25 μm的传感器的空间分辨率，当时达到的角分辨率仅约1角秒。相比之下，本次实验获得的一维图像在系统配置尺寸仅约1米的情况下，实现了0.5角秒的更高角分辨率，证明MIXIM可同时实现高角分辨率与紧凑尺寸。我们还通过引入周期性针孔掩模，首次成功获得了MIXIM的X射线束二维轮廓。在掩模与传感器间距为866.5 cm的条件下，实验达到的最高角分辨率小于0.1角秒，展现了MIXIM的高可扩展性。
英文摘要：
We propose a novel x-ray imaging system, Multi-Image X-ray Interferometer Module (MIXIM), with which a very high angular resolution can be achieved even with a small system size. MIXIM is composed of equally-spaced multiple slits and an x-ray detector, and its angular resolution is inversely proportional to the distance between them. Here we report our evaluation experiments of MIXIM with a newly adopted CMOS sensor with a high spatial resolution of 2.5 μm. Our previous experiments with a prototype MIXIM were limited to one-dimensional imaging, and more importantly, the achieved angular resolution was only {\sim}1", severely constrained due to the spatial resolution of the adopted sensor with a pixel size of 4.25 μm. By contrast, one-dimensional images obtained in this experiment had a higher angular resolution of 0.5" when a configured system size was only {\sim}1 m, which demonstrates that MIXIM can simultaneously realize a high angular resolution and compact size. We also successfully obtained a two-dimensional profile of an x-ray beam for the first time for MIXIM by introducing a periodic pinhole mask. The highest angular resolution achieved in our experiments is smaller than 0.1" with a mask-sensor distance of 866.5 cm, which shows the high scalability of MIXIM.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
