SPring-8/SACLA Research Report

Online ISSN : 2187-6886

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SPring-8 Document D 2026-003

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Section A

Local Structural Analysis of Composite Oxide Mesocrystal Photocatalysts

Yoshitaka Kumabe, Toshiaki Ina, Koji Ohara, Takashi Tachikawa

2026Volume 14Issue 1 Pages 1-4
Published: February 27, 2026
Released on J-STAGE: February 27, 2026

DOIhttps://doi.org/10.18957/rr.14.1.1

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Crystal Structure of Flavohemoglobin from Candida norvegensis

Jotaro Igarashi, Ariki Matsuoka

2026Volume 14Issue 1 Pages 5-8
Published: February 27, 2026
Released on J-STAGE: February 27, 2026

DOIhttps://doi.org/10.18957/rr.14.1.5

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Preliminary Focusing Tests of a Zone Plate for High-energy X-ray Nanoimaging

Yasushi Kagoshima, Yuki Takayama, Nicolaie Moldovan

2026Volume 14Issue 1 Pages 9-14
Published: February 27, 2026
Released on J-STAGE: February 27, 2026

DOIhttps://doi.org/10.18957/rr.14.1.9

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　Preliminary focusing tests of a new type of high-aspect-ratio zone plate was performed. It is fabricated by atomic layer deposition, depositing multilayer zoned nanolaminate films around cylindrical silicon precursors to form the Fresnel zone structure. Owing to its high aspect ratio, it can be used for high-energy X-ray microscopy. As the narrowest zone structures can reach sub-10 nm, the corresponding spatial resolution may be expected. A knife-edge scan method was applied to evaluate the focused beam size. The beam size was estimated to be approximately 1.6 μm. Unfortunately, this size was much larger than expected, indicating the imperfection of the zone structures. It was found that further fabrication improvements are necessary for practical use.

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XAFS Analysis of Heavy Metals in Deposit on Superheater Tubes for Municipal Solid Waste Incineration Boilers

Asako Toda, Shinobu Tanaka, Kenji Shiota, Masaki Takaoka, Takashi Fuji ...

2026Volume 14Issue 1 Pages 15-20
Published: February 27, 2026
Released on J-STAGE: February 27, 2026

DOIhttps://doi.org/10.18957/rr.14.1.15

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Structural Change of the Oxygen-evolving Complex Involved in Photosystem II Accompanied by the S-state Transition

Nobuo Kamiya, Keisuke Kawakami, Seiki Baba

2026Volume 14Issue 1 Pages 21-26
Published: February 27, 2026
Released on J-STAGE: February 27, 2026

DOIhttps://doi.org/10.18957/rr.14.1.21

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Hard X-ray Photoelectron Spectroscopy (HAXPES) Study on the Correlation between Valence Electronic States and Catalytic Activities of Metal Phosphide Nanoparticles

Hiroya Ishikawa, Tomoo Mizugaki, Takato Mitsudome

2026Volume 14Issue 1 Pages 27-30
Published: February 27, 2026
Released on J-STAGE: February 27, 2026

DOIhttps://doi.org/10.18957/rr.14.1.27

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Section B

Examination of Surface Rust Layer on Weathering Steel by Using XAFS

Mitsutoshi Yokomizo, Takumi Wakabayashi, Takuya Mori

2026Volume 14Issue 1 Pages 31-34
Published: February 27, 2026
Released on J-STAGE: February 27, 2026

DOIhttps://doi.org/10.18957/rr.14.1.31

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Time-resolved SAXS/WAXD Studies on Nanoscale Structure of Starch in Rice

Kazuki Kurosawa, Takahiko Kawai, Chie Ohmoto, Hideyuki Yamaguchi

2026Volume 14Issue 1 Pages 35-38
Published: February 27, 2026
Released on J-STAGE: February 27, 2026

DOIhttps://doi.org/10.18957/rr.14.1.35

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Determination of Ga Substitution Site and Substitution Amount in Ga-added Nd-Fe-B Based Sintered Magnet

Yoshinori Fujikawa, Hiroyuki Ohsumi, Kenichi Suzuki, Keisuke Kamiya, L ...

2026Volume 14Issue 1 Pages 39-47
Published: February 27, 2026
Released on J-STAGE: February 27, 2026

DOIhttps://doi.org/10.18957/rr.14.1.39

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SAXS Studies on Mesoscopic Structure and its Dynamics of Starch in Rice

Kazuki Kurosawa, Takahiko Kawai, Chie Ohmoto, Kosuke Yamazoe, Hideyuki ...

2026Volume 14Issue 1 Pages 48-51
Published: February 27, 2026
Released on J-STAGE: February 27, 2026

DOIhttps://doi.org/10.18957/rr.14.1.48

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In-situ SAXS/WAXD Study on Retrogradation of Cooked Rice during Storage

Kazuki Kurosawa, Takahiko Kawai, Chie Ohmoto, Kosuke Yamazoe, Hideyuki ...

2026Volume 14Issue 1 Pages 52-55
Published: February 27, 2026
Released on J-STAGE: February 27, 2026

DOIhttps://doi.org/10.18957/rr.14.1.52

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Analysis of Iron Carbide Structure in FT Catalysts by in-situ XAFS

Tomohiko Mori, Yuta Tanaka, Takeru Utsumi, Kakeru Ninomiya, Maiko Nish ...

2026Volume 14Issue 1 Pages 56-60
Published: February 27, 2026
Released on J-STAGE: February 27, 2026

DOIhttps://doi.org/10.18957/rr.14.1.56

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XAFS Analysis of Lead-Free Sn Perovskite Precursor Solution Additives Effects on Perovskite Crystal Film Defects for Solar Cells

Hiroko Okumura, Sumikazu Yoshikawa, Shugo Yamada, Kazumi Kurooka

2026Volume 14Issue 1 Pages 61-66
Published: February 27, 2026
Released on J-STAGE: February 27, 2026

DOIhttps://doi.org/10.18957/rr.14.1.61

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Section SACLA

Experimental Investigation to Realize Bragg Crystal Hard X ray Laser with Large Size CuSO₄-5H₂O Crystals

Hitoki Yoneda, Yurina Michine

2026Volume 14Issue 1 Pages 67-70
Published: February 27, 2026
Released on J-STAGE: February 27, 2026

DOIhttps://doi.org/10.18957/rr.14.1.67

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Development of X-ray-Pump and NIR-Laser-Probe Measurement System for XFEL-Induced Magnetization Dynamics Experiments

Motohiro Suzuki, Wataru Nishimura, Kenta Tanaka, Takuo Ohkochi, Yuya K ...

2026Volume 14Issue 1 Pages 71-74
Published: February 27, 2026
Released on J-STAGE: February 27, 2026

DOIhttps://doi.org/10.18957/rr.14.1.71

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Investigation of In-solution Imaging of Ionomer Coating in Fuel Cell Catalyst Layers with an X-ray Laser

Akihiro Suzuki, Yoshiya Niida, Masazumi Arao, Masashi Matsumoto, Yuich ...

2026Volume 14Issue 1 Pages 75-78
Published: February 27, 2026
Released on J-STAGE: February 27, 2026

DOIhttps://doi.org/10.18957/rr.14.1.75

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Direct Detection of Ultrafast Nonthermal Charge Density Wave Switching in 1T-TaS₂

Xun Jia, Nelson Hua, Travis Frazer, Corinna Burri, Yoshikazu Tanaka, Y ...

2026Volume 14Issue 1 Pages 79-81
Published: February 27, 2026
Released on J-STAGE: February 27, 2026

DOIhttps://doi.org/10.18957/rr.14.1.79

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　We report a grazing-incidence, optical pump–X-ray probe study at BL3 of SACLA, designed to directly resolve the ultrafast nonthermal switching of charge density waves in 1T-TaS₂. While the NC-CDW and C-CDW peaks were measured at 300 K and 80 K respectively, the latter was too weak for temporal analysis, primarily due to icing and geometrical constraints at low temperatures. Our results underscore the necessity of a dedicated cryogenic setup for future ultrafast diffraction studies under these conditions.

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