Compact hard x-ray split-delay system based on variable-gap channel-cut crystals

Yanwen Sun

doi:10.1364/OL.44.002582

2019-05-15

DOI：10.1364/OL.44.002582

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摘要

En 中文

We present the concept and a prototypical implementation of a compact x-ray split-delay system that is capable of performing continuous on-the-fly delay scans over a range of similar to 10 ps with sub-100 nanoradian pointing stability. The system consists of four channel-cut silicon crystals, two of which have gradually varying gap sizes from intentional 5 deg asymmetric cuts. The delay adjustment is realized by linear motions of these two monolithic varying-gap channel cuts, where the x-ray beam experiences pairs of anti-parallel reflections, and thus becomes less sensitive in output beam pointing to motion imperfections of the translation stages. The beam splitting is accomplished by polished crystal edges. A high degree of mutual coherence between the two branches at the focus is observed by analyzing small-angle coherent x-ray scattering patterns. We envision a wide range of applications including single-shot x-ray pulse temporal diagnostics, studies of high-intensity x-ray-matter interactions, as well as measurement of dynamics in disordered material systems using split-pulse x-ray photon correlation spectroscopy. (C) 2019 Optical Society of America

期刊

Optics Letters

IF:

3.3

论文数:

4.0W

被引数:

7.6W

机构

Stanford University

学者数:

9.6W

论文数: 8.2W

被引数: 17.0W

SLAC National Accelerator Laboratory

学者数:

4.3K

论文数: 2.5K

被引数: 1.7W

united states department of energy (doe)

学者数:

11.3W

论文数: 9.6W

被引数: 246

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