利用二维x射线探测器实现纳秒级时间分辨率。

IF 3 3区物理与天体物理

Journal of Synchrotron Radiation Pub Date : 2025-09-01 Epub Date: 2025-08-18 DOI:10.1107/S1600577525006599

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

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引用次数: 0

摘要

最快的像素阵列x射线探测器可以记录纳秒级分辨率的图像。这是通过在像素内存储单元中存储少量图像来实现的。在本研究中，我们通过在事件驱动模式下操作原型探测器来演示纳秒级分辨率。通过测量胶体纳米颗粒的布朗动力学来测试该模式的性能。通过对相邻像素进行互相关分析，可以达到低于100 ns的时间分辨率，克服像素死区时间。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。

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

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.

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来源期刊

Journal of Synchrotron Radiation INSTRUMENTS & INSTRUMENTATIONOPTICS&-OPTICS

CiteScore

5.60

自引率

12.00%

发文量

289

审稿时长

1 months

期刊介绍： Synchrotron radiation research is rapidly expanding with many new sources of radiation being created globally. Synchrotron radiation plays a leading role in pure science and in emerging technologies. The Journal of Synchrotron Radiation provides comprehensive coverage of the entire field of synchrotron radiation and free-electron laser research including instrumentation, theory, computing and scientific applications in areas such as biology, nanoscience and materials science. Rapid publication ensures an up-to-date information resource for scientists and engineers in the field.