BL13U (Beamline Group)

X-ray absorption spectroscopy (XAS) using energy and polarization tunable synchrotron radiation is a powerful element-specific tool to observe the electronic structure of materials. The photon-in/photon-out spectroscopy is compatible with the operando measurements to pursue the modification of the electronic structure in aqueous and/or solid samples with bias voltage, structural distortion, or heat gradient. Such measurements are quite useful to unveil the in-situ electrochemical reactions and electrocatalyst characterizations. Moreover, polarization dependence of XAS from magnetic materials, namely X-ray magnetic circular and linear dichroism (XMCD and XMLD, respectively), is sensitive to the spin and orbital texture of target elements, which dominate numerous spintronic phenomena applicable for next-generation spintronic devices.
Beamline 13U (BL13U) is designed for the high performance XAS measurements with versatile polarization and wide photon energy range (180 to 3000 eV). A wide energy range available at a single beamline expands the accessible elements at the single site and its XMCD/XMLD provides the magnetic and orbital texture of each element.
To meet such criteria, BL13U adopted the segmented APPLE-II undulator. By tuning the interfere condition of photons from each undulator segment, the user can use the arbitrary polarized soft-X and tender-X synchrotron radiations with arbitral photon polarization. Together with the state-of-the-art 3D Wolter mirror optics, microscopic XAS/XMCD/XMLD measurements in wide energy range are available at this beamline.

Also see

• Ohtsubo et al. J. Phys. Conf. Ser. 3010 , 012079 (2025).
• Ohtsubo et al. J. Phys. Conf. Ser. 2380 ,012037 (2022).
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(以下執筆中。しばらくお待ちください）/ Under construction

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• BL13Uについて

量子科学技術研究開発機構 NanoTerasuセンター ビームライングループ
大坪 嘉之 E-mail:  ohtsubo.yoshiyuki[at]qst.go.jp

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