Volume 06, No.3

目次 / Table of Contents

May issue 2001

所長室から
From the Director’s Office

上坪　宏道　KAMITSUBO Hiromichi

（財）高輝度光科学研究センター　副会長　JASRI Vice President, Director of JASRI Research Sector

Pages 159 - 160 Download PDF (14.91 KB)

1. SPring-8の現状／PRESENT STATUS OF SPring-8

第6回共同利用（2000B）における実施課題
The Experiments in the 6th Research Period (2000B) at the Public Beamlines of SPring-8

（財）高輝度光科学研究センター　利用業務部　JASRI Users Office

Pages 161 - 168 Download PDF (62.54 KB)

2001B SPring-8共用ビームライン利用研究課題の募集について
Call for the Beam Time Application for the Public Beamlines at SPring-8

放射光利用研究促進機構　（財）高輝度光科学研究センター　Organization for the Promotion of Synchrotron Radiation Research･JASRI

Pages 169 - 185 Download PDF (120.58 KB)

放射光研究所の組織変更について
Reorganization of the structure in the JASRI’s Synchrotron Radiation Research Laboratory

菊田　惺志　KIKUTA Seishi

（財）高輝度光科学研究センター　理事　放射光研究所副所長　JASRI, Deputy Director

Pages 186 - 188 Download PDF (16.56 KB)

SPring-8の利用支援体制について
User Support of SPring-8

植木　龍夫　UEKI Tatsuo

（財）高輝度光科学研究センター　利用研究促進部門II　部門長　JASRI Life & Environment Division

Pages 189 - 191 Download PDF (78.10 KB)

SPring-8運転・利用状況
SPring-8 Operational News

（財）高輝度光科学研究センター　所長室　計画調整グループ　JASRI Planning and Coordination Section, Director's Office

Page 192 Download PDF (8.89 KB)

2. 共用ビームライン／PUBLIC BEAMLINE

分光分析ビームライン（BL37XU）の計画
Conceptual Design of BL37XU

後藤　俊治　GOTO Shunji^[1]、竹下　邦和　TAKESHITA Kunikazu^[1]、早川　慎二郎　HAYAKAWA Shinjiro^[2]、石川　哲也　ISHIKAWA Tetsuya^[3]

^[1]（財）高輝度光科学研究センター　放射光研究所　ビームライン・技術部門　JASRI Beamline Division、^[2]広島大学大学院　工学研究科　Graduate School of Engineering, Hiroshima University、^[3]（財）高輝度光科学研究センター　放射光研究所　ビームライン・技術部門、理化学研究所　播磨研究所　JASRI Beamline Division/RIKEN Harima Institute

Pages 193 - 197 Download PDF (41.09 KB)

3. その他のビームライン／OTHER BEAMLINES

量子構造物性ビームラインBL22XU建設計画の概要
New JAERI Beamline BL22XU to be Completed in 2001

小西　啓之　KONISHI Hiroyuki、塩飽　秀啓　SHIWAKU Hideaki、稲見　俊哉　INAMI Toshiya、片山　芳則　KATAYAMA Yoshinori、綿貫　徹　WATANUKI Tetsu

日本原子力研究所　関西研究所　放射光科学研究センター　Synchrotron Radiation Research Center, JAERI Kansai Research Establishment

Pages 198 - 201

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構造ゲノムビームライン（BL26B1/B2）の計画
Conceptual Design of BL26B1/B2

山本　雅貴　YAMAMOTO Masaki^[1]、後藤　俊治　GOTO Shunji^[2]、竹下　邦和　TAKESHITA Kunikazu^[2]、石川　哲也　ISHIKAWA Tetsuya^[3]

^[1]理化学研究所　播磨研究所　RIKEN Harima Institute、^[2]（財）高輝度光科学研究センター　放射光研究所　ビームライン・技術部門　JASRI Beamline Division、理化学研究所　播磨研究所、^[3]（財）高輝度光科学研究センター　放射光研究所　ビームライン・技術部門　RIKEN Harima Institute/JASRI Beamline Division

Pages 202 - 206 Download PDF (74.07 KB)

創薬産業ビームライン（BL32B2）計画
Pharmaceutical Industry Beamline (BL32B2)

西島　和三　NISHIJIMA Kazumi^[1]、石川　哲也　ISHIKAWA Tetsuya^[2]

^[1]持田製薬株式会社　研開企画推進部　R&D Planning and Management Division, Mochida Pharmaceutical Co., Ltd.、^[2]理化学研究所　播磨研究所　Ｘ線干渉光学研究室　Coherent X-ray Optics Laboratory, Harima Institute, RIKEN

Pages 207 - 210 Download PDF (43.06 KB)

4. 最近の研究から／FROM LATEST RESEARCH

高分解能マイクロビームＸ線回折法によるInGaAsP選択成長層の評価
Characterization of InGaAsP Selective- growth Layers Using High Resolution Microbeam x-ray Diffraction

木村　滋　KIMURA Shigeru^[1]、木村　英和　KIMURA Hidekazu^[1]、小林　憲司　KOBAYASHI Kenji^[1]、泉　弘一　IZUMI Koichi^[1]、阪田　康隆　SAKATA Yasutaka^[2]、津坂　佳幸　TSUSAKA Yoshiyuki^[3]、松井　純爾　MATSUI Junji^[3]

^[1]ＮＥＣ基礎研究所　Fundamental Research Laboratories, NEC Corporation、^[2]ＮＥＣ関西　化合物デバイス統括部　Compound Semiconductor Device Division, NEC Kansai Limited、^[3]姫路工業大学　理学部　Faculty of Science, Himeji Institute of Technology

Abstract: We have succeeded in developing the high-resolution microbeam x-ray diffraction method to define optical devices. Using the method, the lattice constants of quaternary alloy (InGaAsP) compound semiconductors selectively grown in microscopic regions measuring 1.7 µm in width were accurately measured. As a result, it is possible to define the composition of the selectively grown InGaAsP layers with roughly 100 times more accuracy than when using traditional technologies.

Pages 211 - 217 Download PDF (435.16 KB)

高等植物の電子伝達複合体の立体構造
Structure of the plant electron transfer complex from maize leaf

栗栖　源嗣　KURISU Genji、楠木　正巳　KUSUNOKI Masami

大阪大学　蛋白質研究所　Institute for Protein Research, Osaka University

Abstract: Photosynthetic electron transfer is a key reaction, which makes green plants get the reductive power to grow. About 20 years ago, the first structure of a plant-type ferredoxin, a photosynthetic electron carrier protein, has bee reported. Many biochemists and plant physiologists have been studying the interaction site of ferredoxin based on this 3D structure. After the crystal structure of ferredoxin-NADP+ reductase, a partner protein of ferredoxin, has been reported in 1991, further experiments, including computer modeling and continuous mutational experiments, of this protein-protein interaction have been done extensively. Here we determined the first 3D structure of this electron transfer complex from maize leaf. We think that the structural information of this complex is consistent with previous biochemical and biophysical reports and conclude the precise interaction model.

Pages 218 - 222 Download PDF (314.31 KB)

活性化された筋収縮蛋白のX線繊維回折
X-ray fiber diffraction of activated contractile proteins in muscle

岩本　裕之　IWAMOTO Hiroyuki^[1]、大岩　和弘　OIWA Kazuhiro^[2]、鈴木　拓　SUZUKI Takuya^[3]、藤澤　哲郎　FUJISAWA Tetsuro^[4]

^[1]（財）高輝度光科学研究センター　放射光研究所　JASRI Research Sector、^[2]総務省　通信総合研究所　関西先端研究センター　Kansai Advanced Research Center, Communications Research Laboratory、^[3]（財）高輝度光科学研究センター　放射光研究所　JASRI Research Sector、^[4]理化学研究所　播磨研究所　RIKEN Harima Institute

Abstract: X-ray diffraction/scattering techniques using synchrotron radiation offer a wide range of applications to biological sciences. Protein crystallography is the best-known example. The lesser-known but equally important applications include small-angle scattering and fiber diffraction. Unlike protein crystallography, these techniques can be applied to proteins or protein assemblies functioning under physiological conditions. Here we briefly describe what can be achieved by using the fiber diffraction technique using synchrotron radiation, with an example of our own recent results on the contractile proteins in muscle fiber.

Pages 223 - 226 Download PDF (652.73 KB)

K殻電離に伴う金¹⁹⁷核励起現象の観測
Observation of nuclear excitation by K-shell ionization on ¹⁹⁷Au

岸本　俊二　KISHIMOTO Shunji

高エネルギー加速器研究機構　物質構造科学研究所　Institute of materials structure science, High energy accelerator research organization

Abstract: We have succeeded in observing nuclear excitation by electron transition (NEET) on ¹⁹⁷Au by a new method. Monochromatic x-rays of BL09XU were used to ionize the K shell of gold atoms. The internal-conversion electrons emitted from excited nuclei were detected with the time spectroscopy using a silicon avalanche photodiode detector. At a photon energy of 80.989 keV, higher than the Au K-edge, the NEET probability on ¹⁹⁷Au was determined from a comparison of the event rates between the NEET and the nuclear resonance at 77.351 keV.