SPring-8/SACLA Research Report

SPring-8/SACLA Research Report

Online ISSN : 2187-6886

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SPring-8 Document D 2025-006

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Section A

Impact Tracks in Ultra-low Density Silica Aerogel for Collecting Micrometeorites aboard the International Space Station in the Tanpopo Mission ~Search for Micrometeorites and Capture Process

Akira Tsuchiyama, Mizuho Nishi, Hajime Yano, Junya Matsuno, Takaaki No ...

2025 Volume 13 Issue 3 Pages 106-121
Published: June 30, 2025
Released on J-STAGE: June 30, 2025

DOIhttps://doi.org/10.18957/rr.13.3.106

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XAFS Study for Ancient Japanese Textile Dyeing Process: Elucidation Ancient Dye Mordant of Edo and Momoyama Periodo

Hikaru Takaya, Yusuke Tamenori, Sachio Yoshioka

2025 Volume 13 Issue 3 Pages 122-126
Published: June 30, 2025
Released on J-STAGE: June 30, 2025

DOIhttps://doi.org/10.18957/rr.13.3.122

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X-ray Crystal Structure Analysis of Voltage Sensing Domain of Voltage Sensor Protein, VSP

Hirotaka Narita, Atsushi Nakagawa

2025 Volume 13 Issue 3 Pages 127-130
Published: June 30, 2025
Released on J-STAGE: June 30, 2025

DOIhttps://doi.org/10.18957/rr.13.3.127

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Structural Information of Mg Thin Films from the Atomic Pair Distribution Function

Hyunjeong Kim, Kouji Sakaki, Kohta Asano, Véronique Charbonnier, Keita ...

2025 Volume 13 Issue 3 Pages 131-134
Published: June 30, 2025
Released on J-STAGE: June 30, 2025

DOIhttps://doi.org/10.18957/rr.13.3.131

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　To develop an approach to obtaining nanoscale structural information of highly textured thin films, we investigated the structures of ground Mg thin films of 200 and 400 nm thicknesses deposited on thin quartz glass substrates by the atomic pair distribution function (PDF) analysis of synchrotron X-ray total scattering data. The PDFs of both thin films showed clear peaks up to the high interatomic distance region indicating the presence of well-defined long range structural order. For the case of the Mg thin film of 200 nm thickness, it was difficult to subtract glass substrate signals completely and, as a result, large SiO₂ peaks remained leading to inaccurate structural information. On the other hand, SiO₂ peaks were not noticeable in the PDF of the Mg thin film of 400 nm thickness and its lattice parameters obtained by PDF refinement agreed well with the reported values of bulk Mg. Our analysis suggested that one of the most critical parts of this approach is the removal of the substrate signals completely.

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Analysis on Surface Density Fluctuation of Spherical Micelles by Scattering Measurement

Noriyuki Yoshii, Koji Yoshida, Yusuke Tamenori, Koji Ohara

2025 Volume 13 Issue 3 Pages 135-139
Published: June 30, 2025
Released on J-STAGE: June 30, 2025

DOIhttps://doi.org/10.18957/rr.13.3.135

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In situ Observation by 4D-imaging of Kink Structure Development in LPSO Mg-alloys

Masayuki Uesugi, Kazuya Aizawa, Tomotaka Miyazawa

2025 Volume 13 Issue 3 Pages 140-145
Published: June 30, 2025
Released on J-STAGE: June 30, 2025

DOIhttps://doi.org/10.18957/rr.13.3.140

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Spatial Distribution of Counter Cations around DNA with Anomalous Small-angle X-ray Scattering

Shota Sasaki, Kosuke Morimoto, Kazuyuki Ito, Isamu Akiba

2025 Volume 13 Issue 3 Pages 146-149
Published: June 30, 2025
Released on J-STAGE: June 30, 2025

DOIhttps://doi.org/10.18957/rr.13.3.146

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Infrared Study of Electronic Properties in Excitonic Insulator-related Material Ta₂NiS₅

Hidekazu Okamura, Yuta Matsui, Katsuaki Miki, Naoki Noguchi, Takashi M ...

2025 Volume 13 Issue 3 Pages 150-153
Published: June 30, 2025
Released on J-STAGE: June 30, 2025

DOIhttps://doi.org/10.18957/rr.13.3.150

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Study on Delayed Effect of Crystallization Rate of Isotactic Polypropylene by Addition of Low Isotactic Polypropylene

Shotaro Nishitsuji, Nozomu Fujii, Tomoaki Takebe

2025 Volume 13 Issue 3 Pages 154-157
Published: June 30, 2025
Released on J-STAGE: June 30, 2025

DOIhttps://doi.org/10.18957/rr.13.3.154

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Applications of Compact X-ray Fluorescence Polychromator to Synchrotron Radiation

Kenji Sato, Tetsuya Yoneda, Takashi Nyu, Takuro Izumi, Keijiro Suzuki, ...

2025 Volume 13 Issue 3 Pages 158-167
Published: June 30, 2025
Released on J-STAGE: June 30, 2025

DOIhttps://doi.org/10.18957/rr.13.3.158

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Simultaneous Visualization of Flow in a Nozzle and Flashing Spray using High Flux X-rays

Dai Matsuda, Masayasu Shimura, Kohei Kuzuoka, Keisuke Komada, Taku Tsu ...

2025 Volume 13 Issue 3 Pages 168-171
Published: June 30, 2025
Released on J-STAGE: June 30, 2025

DOIhttps://doi.org/10.18957/rr.13.3.168

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Section C

Fast Data Acquisition of the Nuclear Resonant Scattering Spectra using APD Linear-array Detector

Yoshitaka Yoda, Ryo Masuda, Shunji Kishimoto

2025 Volume 13 Issue 3 Pages 172-174
Published: June 30, 2025
Released on J-STAGE: June 30, 2025

DOIhttps://doi.org/10.18957/rr.13.3.172

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Section SACLA

Pump-probe TR-WAXS Distinguishes Activation from Heating Effects in Ultrafast Rhodopsin Dynamics

Konstantinos Karpos, Derek Mendez, Sabine Botha, Steven Fried, Hao Hu, ...

2025 Volume 13 Issue 3 Pages 175-182
Published: June 30, 2025
Released on J-STAGE: June 30, 2025

DOIhttps://doi.org/10.18957/rr.13.3.175

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　TR-WAXS at SACLA BL3 examined structural dynamics in rhodopsin after retinal photoisomerization. We collected profiles up to 10ps post-green laser activation, using red light as control. SVD analysis showed one main signal per experiment. The rhodopsin response in green light differed from red light and from the CHAPS solvent control, suggesting distinct structural changes.

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