Development of a multi-functional chamber for resonant X-ray scattering experiments in the tender X-ray regime at the PAL-XFEL.

IF 2.5 3区物理与天体物理

Journal of Synchrotron Radiation Pub Date : 2025-05-01 Epub Date: 2025-04-22 DOI:10.1107/S1600577525002899

Soon Hee Park, Seonghan Kim, Jaeku Park, Seokhwan Yun, Jaehong Jeong, Je Geun Park, Kyung Sook Kim, Tae Kyu Choi, Intae Eom, Dogeun Jang, Minseok Kim, Jae Hyuk Lee, Sang Youn Park, Hyunjung Kim, Sae Hwan Chun

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引用次数: 0

Abstract

The hard X-ray undulator line at Pohang Accelerator Laboratory X-ray Free Electron Laser (PAL-XFEL) provides a wide range of photon energies encompassing both the tender (2-5 keV) and hard (5-15 keV) X-ray regimes. Its Femtosecond X-ray Scattering (FXS) endstation is dedicated to research in condensed matter physics and materials science, and supports various time-resolved X-ray experiments, such as diffraction, spectroscopy and resonant X-ray scattering. We report the development of a multi-functional chamber at the FXS endstation to support the experiments in the tender X-ray regime where significant air scattering and absorption pose challenges. This chamber enables optical-pump/X-ray-probe experiments in a vacuum environment, with its functionality demonstrated through time-resolved resonant elastic X-ray scattering experiments on a ruthenate Li₂RuO₃ near the Ru L₃ (∼2.84 keV) absorption edge. Designed to readily accommodate modular instruments, the chamber offers flexibility to provide diverse experiment conditions requested by users at the FXS endstation.

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PAL-XFEL软x射线区共振x射线散射实验多功能室的研制。

浦项加速器实验室x射线自由电子激光器（PAL-XFEL）的硬x射线波动线提供了广泛的光子能量，包括软（2-5 keV）和硬（5-15 keV） x射线体制。其飞秒x射线散射（FXS）终端致力于凝聚态物理和材料科学的研究，并支持各种时间分辨x射线实验，如衍射，光谱学和共振x射线散射。我们报告了FXS终端站多功能室的发展，以支持在tender x射线制度下的实验，其中显着的空气散射和吸收构成挑战。该腔室能够在真空环境下进行光泵/ x射线探针实验，其功能通过在钌L3 （~ 2.84 keV）吸收边缘附近的钌酸锂（Li2RuO3）上进行时间分辨共振弹性x射线散射实验来证明。该室的设计易于容纳模块化仪器，可灵活地提供FXS终端用户所要求的各种实验条件。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.