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利用二维X射线探测器实现纳秒级时间分辨率。

Achieving nanosecond time resolution with a two-dimensional X-ray detector.

作者信息

Chushkin Yuriy, Correa Jonathan, Ignatenko Alexandr, Pennicard David, Lange Sabine, Fridman Sergei, Karl Sebastian, Senfftleben Björn, Lehmkühler Felix, Westermeier Fabian, Graafsma Heinz, Cammarata Marco

机构信息

ESRF - The European Synchrotron, 71 avenue des Martyrs, 38000 Grenoble, France.

Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany.

出版信息

J Synchrotron Radiat. 2025 Sep 1;32(Pt 5):1220-1227. doi: 10.1107/S1600577525006599. Epub 2025 Aug 18.

DOI:10.1107/S1600577525006599
PMID:40824695
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC12416413/
Abstract

The fastest pixel array X-ray detectors can record images with nanosecond resolution. This is accomplished by storing only a few images in in-pixel memory cells. In this study, we demonstrate nanosecond resolution over a large number of images by operating a prototype detector in an event driven mode. The performance of this mode is tested by measuring the Brownian dynamics of colloidal nanoparticles. We can achieve sub-100 ns time resolution and overcome the pixel dead time by applying a cross-correlation analysis of the neighboring pixels. The approach used in this work can be extended to study time-resolved fast processes with diffraction, scattering or imaging techniques.

摘要

最快的像素阵列X射线探测器能够以纳秒级分辨率记录图像。这是通过在像素内存储单元中仅存储少量图像来实现的。在本研究中，我们通过以事件驱动模式操作一个原型探测器，在大量图像上展示了纳秒级分辨率。通过测量胶体纳米颗粒的布朗动力学来测试这种模式的性能。我们可以通过对相邻像素进行互相关分析来实现低于100纳秒的时间分辨率并克服像素死时间。这项工作中使用的方法可以扩展到用衍射、散射或成像技术研究时间分辨的快速过程。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/12c9/12416413/5202ca3af10c/s-32-01220-fig5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/12c9/12416413/b8fb9eb68495/s-32-01220-fig1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/12c9/12416413/c33dbac131ef/s-32-01220-fig2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/12c9/12416413/6b9144136cf9/s-32-01220-fig3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/12c9/12416413/0c5eb084fa7c/s-32-01220-fig4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/12c9/12416413/5202ca3af10c/s-32-01220-fig5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/12c9/12416413/b8fb9eb68495/s-32-01220-fig1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/12c9/12416413/c33dbac131ef/s-32-01220-fig2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/12c9/12416413/6b9144136cf9/s-32-01220-fig3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/12c9/12416413/0c5eb084fa7c/s-32-01220-fig4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/12c9/12416413/5202ca3af10c/s-32-01220-fig5.jpg

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