Volume 08, No.2

所長の目線
Director’s Eye

吉良　爽　KIRA Akira

(財)高輝度光科学研究センター　副理事長、放射光研究所長　JASRI Vice President, Director of JASRI Research Sector

Page 60 Download PDF (12.83 KB)

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

2003A利用研究課題選定委員会を終えて
Report of the Proposal Review Committee for the 2003A Term

松井　純爾　MATSUI Junji

(財)高輝度光科学研究センター　利用研究課題選定委員会　主査、姫路工業大学　理学部　Faculty of Science, Himeji Institute of Technology

Pages 61 - 63 Download PDF (22.11 KB)

−生命科学分科会−
– Life Science Division –

田之倉　優　TANOKURA Masaru

東京大学大学院　農学生命科学研究科　Graduate School of Agricultural and Life Sciences/Faculty of Agriculture, The University of Tokyo

Pages 64 - 65 Download PDF (17.74 KB)

−散乱・回折分科会−
– Scattering and Diffraction Division –

佐々木　聡　SASAKI Satoshi

東京工業大学　応用セラミックス研究所　Materials and Structures Laboratory, Tokyo Institute of Technology

Pages 66 - 67 Download PDF (18.82 KB)

−XAFS分科会−
– XAFS Division –

渡辺　巌　WATANABE Iwao

大阪女子大学　理学部　Faculty of Science, Osaka Womenﾕs University

Pages 68 - 70 Download PDF (20.85 KB)

−分光分科会−
– Spectroscopy Division –

小谷野　猪之助　KOYANO Inosuke^[1]、早川　慎二郎　HAYAKAWA Shinjiro^[2]

^[1]姫路工業大学　名誉教授　Himeji Institute of Technology, Faculty of Science、^[2]広島大学大学院　工学研究科

Pages 71 - 72 Download PDF (16.33 KB)

−実験技術・方法等分科会−
– Method & Instrumentation Division –

渡辺　誠　WATANABE Makoto

東北大学　多元物質科学研究所　Institute of Multidisciplinary Research for Advanced Materials, Tohoku University

Pages 73 - 74 Download PDF (17.42 KB)

−産業利用分科会−
– Industrial Application Division –

岡本　篤彦　OKAMOTO Tokuhiko

立命館大学　総合理工学研究機構　Ritsumeikan University, Research Organization of Science and Engineering, Synchrotron Radiation Center

Pages 75 - 76 Download PDF (19.03 KB)

−特定利用分科会−
– On the SPring-8 Long Term Use –

松井　純爾　MATSUI Junji

姫路工業大学　理学部　Faculty of Science, Himeji Institute of Technology

Page 77 Download PDF (11.83 KB)

タンパク3000プロジェクト −野心的なポストゲノム研究のはじまり−
MEXT National Project on Protein and Functional Analysis in Japan

宮野　雅司　MIYANO Masashi

理化学研究所　播磨研究所　RIKEN Harima Institute

Pages 78 - 83 Download PDF (86.42 KB)

SPring-8蓄積リングの低エミッタンス化
Emittance Reduction of the SPring-8 Storage Ring

田中　均　TANAKA Hitoshi、大熊　春夫　OHKUMA Haruo、熊谷　教孝　KUMAGAI Noritaka

(財)高輝度光科学研究センター　放射光研究所　加速器部門　JASRI Accelerator Division

Pages 84 - 89 Download PDF (88.71 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ﾕs Office

Pages 90 - 92 Download PDF (183.12 KB)

論文発表の現状
Publications Resulting from Experiments at SPring-8

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

Pages 93 - 94 Download PDF (183.12 KB)

2. 最近の研究から／FROM LATEST RESEARCH

高エネルギーX線を用いた“乱れた構造”の精密構造解析
Accurate Structural Analysis of Disordered Materials with High-Energy X-ray Diffraction

小原　真司　KOHARA Shinji^[1]、大石　泰生 OHISHI Yasuo^[1]、米田　安宏　YONEDA Yasuhiro^[2]、松本　徳真　MATSUMOTO Norimasa^[2]、鈴谷　賢太郎　SUZUYA Kentaro^[2]

^[1](財)高輝度光科学研究センター　放射光研究所　JASRI Synchrotron Radiation Research Laboratory
^[2]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

Abstract: With the arrival of the latest generation of synchrotron sources and the introduction of advanced insertion devices (wigglers and undulators), the high-energy (E >=30 keV) X-ray diffraction technique has become feasible, leading to new approaches in the quantitative study of the structure of disordered materials. High-energy X-ray diffraction has several advantages: higher resolution in real space due to a wide range of scattering vector Q, smaller correction terms (especially the absorption correction), reduction of truncation errors, the feasibility of running under extreme environments, including high-temperatures and high-pressures, and the ability to make direct comparisons between X-ray and neutron diffraction data. Recently, high-energy X-ray diffraction data have been combined with neutron diffraction data from a pulsed source to provide more detailed and reliable structural information than that hitherto available. This article reviews and summarizes recent results obtained from the high-energy X-ray diffraction on glass, liquid, amorphus and crystalline materials using bending magnet beamlines at SPring-8.

Pages 95 - 102 Download PDF (342.92 KB)

一本の筋原繊維からのX線回折像撮影
X-ray Diffraction Recording from Single Myofibrils

岩本　裕之　IWAMOTO Hiroyuki

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

Abstract: By using the combination of intense X-ray beams from an undulator-based beamline at SPring-8 (BL45XU) and a microbeam optics, we were able to record X-ray diffraction patterns from single myofibrils of a striated muscle (bumblebee flight muscle). Unlike in the conventional method, the muscle cell was irradiated end-on, so that a diffraction pattern from a myofibril was recorded without isolating it from the cell. The recorded pattern consisted of a number of hexagonally arranged spot-like reflections, clearly indicating that the reflections originated from a single hexagonal lattice of myofilaments. Since the muscle cells used were ~3 mm long and contained 1000+ sarcomeres connected in series, the result means that the lattices in these sarcomeres are exactly in register. The achievement opens the possibility that the X-ray diffraction technique may be applied to other micrometer-sized protein assemblies in the cell, such as axonemes and mitotic spindles.

Pages 103 -106 Download PDF (147.65 KB)