Volume 06（2001）
（財）高輝度光科学研究センター 副会長 JASRI Vice President, Director of JASRI Research Sector
（財）高輝度光科学研究センター 副会長 JASRI Vice President, Director of JASRI Research Sector
（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
（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
（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
1. SPring-8の現状／PRESENT STATUS OF SPring-8
（財）高輝度光科学研究センター 理事 放射光研究所副所長、図書編集専門委員会委員長 JASRI, Deputy Director／Chairperson of Publication Committee
（財）高輝度光科学研究センター SPring-8利用研究課題選定委員会、姫路工業大学 理学部 Faculty of Science, Himeji Institute of Technology
（財）高輝度光科学研究センター 所長室 産業利用グループ 参事 JASRI Industry Support Group of Director's Office, Director
（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
京都教育大学 教育学部（利用研究課題選定委員会 主査） Department of Physics, Kyoto University of Education
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
名古屋大学大学院 工学研究科 Graduate School of Engineering, Nagoya University
北海道大学大学院 理学研究科 Graduate School of Science, Hokkaido University
2. 共用ビームライン／PUBLIC BEAMLINE
[1]Japan Synchrotron Radiation Research Institute(JASRI)、[2]The Institute of Physical and Chemical Research (RIKEN)、[3]Japan Synchrotron Radiation Research Institute(JASRI)、[4]NEC Fundamental Research Laboratory、[5]Japan Synchrotron Radiation Research Institute(JASRI) and The Institute of Physical and Chemical Research (RIKEN)
- Abstract
- We discuss recent advances in instrumentation for high resolution inelastic x-ray scattering and nuclear resonant scattering of synchrotron radiation at BL35XU. Notable points are demonstration of the backscattering monochromator performance over long scan ranges, significant improvements in analyzer crystal perfection and a setup for nuclear scattering from the 25.6 keV resonance of 161Dy. The last includes a new compact optical design yielding 2×108 photons/sec into a 0.52 meV bandwidth at 25.6 keV and a detector with ~200 ps time resolution and ~20% efficiency at 25.6 keV.
[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
[1]（財）高輝度光科学研究センター 放射光研究所 利用研究促進部門Ⅰ JASRI Materials Science Division、[2]東京理科大学 理工学部 物理学科 Science University of Tokyo, Faculty of Science and Technology、[3]㈱富士総合研究所 フロンティア・サイエンス室 Fuji Research Institute Corporation, Frontier Science and Technology、[4]姫路工業大学 理学部 Himeji Institute of Technology, Faculty of Science
- Abstract
- Band structure and Compton profile calculation programs are now available at BL08W. In the programs, wave functions and their related quantities are computed based on a LDA-based FLAPW method, and Compton profiles are efficiently calculated using a lattice harmonics expansion technique for electron momentum density. This report gives the outline of the programs and presents examples of calculation results. Perspectives are also given on both the advances of the band structure calculation method and the expansions of the program’s performance to compute other experimental spectra and quantities one can measure using synchrotron radiations.
[1]（財）高輝度光科学研究センター 放射光研究所 利用研究促進部門Ⅰ JASRI Materials Science Division、[2]（財）高輝度光科学研究センター 放射光研究所 利用研究促進部門Ⅱ JASRI Life & Environment Division、[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 JASRI Beamline Division
日本原子力研究所、理化学研究所、放射光利用研究促進機構 （財）高輝度光科学研究センター JAERI／RIKEN／Organization for the Promotion of Synchrotron Radiation Research · JASRI
（財）高輝度光科学研究センター 放射光研究所 利用研究促進部門Ⅱ JASRI Life & Environment Division
[1]JASRI Materials Sciences Division、[2]JASRI Beamline Division、[3]JASRI Materials Sciences Division and JASRI Beamline Division、[4]SPring-8 Service Co. Ltd.、[5]JASRI Beamline Division and RIKEN Harima Institute
- Abstract
- BL13XU is currently being prepared for public use. We would bring you to a guided tour of BL13XU. The beamline monochromator and mirrors have been tested. Thus x-ray beam performance has been evaluated. We describe herein the topics (a photon flux, intensity stability, the critical angles of the mirror, and a focal condition) out of outcomes that we have achieved since May 2001. Diffractometers available are mentioned as well.
(財)高輝度光科学研究センター SPring-8利用研究課題選定委員会、京都教育大学 教育学部 Department of Physics, Kyoto University of Education
3. その他のビームライン／OTHER BEAMLINES
日本電気㈱ システムデバイス・基礎研究本部 基礎研究所（産業用専用ビームライン建設利用共同体 幹事長） Fundamental Research Laboratories, NEC Corporation
（財）高輝度光科学研究センター 放射光研究所 利用促進部門 JASRI Experimental Facilities Division
- Abstract
- The installation of the R&D beamline III (BL38B1) was started from November 2000. The X-ray source of BL38B1 is a bending magnet and mirror-focused monochromatic beam is useful for both XAFS and protein crystallography. A wide range of X-ray energy with the mirror angle of 0 to 3.2 mrad is available for many purposes such as XAFS experiment, optics and detector development, and design of new experimental technique. A CCD X-ray detector for protein crystallography have been installed. This beamline is open for SPring-8 staff and public users from 2001A.
理化学研究所 播磨研究所 RIKEN Harima Institute
- Abstract
- The number of IDs installed in the storage ring as of January 2001 is 23, which corresponds to about two thirds of the number of straight sections available for IDs. Most of the ID beamlines adopt IDs called standard in-vacuum undulators with the periodic length of 32 mm, which can supply hard x rays between 5 and 80 keV using up to the 5th harmonic. As for other beamlines, very exotic devices such as helical, figure-8 or revolver undulators are adopted to provide special polarization states, very high flux, or very wide energy range. In this report, the status of IDs is presented including recent topics concerning the ID construction at SPring-8.
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
[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
[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
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
[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 JASRI
（財）新産業創造研究機構 研究所 研究二部 Research Department-II, Research Institute, The New Industry Research Organization
姫路工業大学 理学部 Faculty of Science, Himeji Institute of Technology
[1]無機材質研究所 専用ビームライン事務所 Harima Office, National Institute for Research in Inorganic Materials (NIRIM)、[2]スプリングエイトサービス㈱ SPring-8 Service Co., Ltd.
4. 最近の研究から／FROM LATEST RESEARCH
[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.
[1]名古屋大学大学院 工学研究科 Department of Applied Physics, Nagoya University、[2]名古屋大学大学院 理学研究科 Department of Chemistry, Nagoya University
- Abstract
- The geometry of carbon cages(fullerenes) is governed by the isolated pentagon rule(IPR), which states that the most stable fullerenes are those in which all pentagons are surrounded by five hexagons. Although this rule has been verified experimentally, it is impossible for fullerenes in the range C60 to C70 to obey it. Here we describe the structure determination of the IPR-violating metallofullerene, Sc2@C66, a C66 fullerene encaging a scandium dimmer, by the synchrotron radiation powder method using Large Debye-Scherrer Camera at BL02B2 in SPring-8. The results indicate that encapsulation of the metal dimmer significantly stabilizes this extremely unstable C66 fullerene.
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.
[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.
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.
理化学研究所 播磨研究所 播磨研究推進部 RIKEN Harima Institute Harima Research Promotion Division
奈良先端科学技術大学院大学 物質創成科学研究科 Graduate School of Materials Science, Nara Institute of Science and Technology (NAIST)
- Abstract
- A new display-type spherical mirror analyzer has been constructed at BL25SU to study photoelectron spectroscopy especially for circularly polarized light photoelectron diffraction. The advantage of this analyzer is that the angular distribution of emitted photoelectrons of one particular kinetic energy can be measured on the screen without distortion. The energy resolution is 0.3% of the pass energy. The acceptance solid angle is ±60 deg at present, and it can be increased to ±80 deg in near future. The angular resolution is 0.6 deg. Recent result of stereo-photograph of atomic arrangement is shown.
[1]松下電器産業㈱ 先端技術研究所、科学技術振興事業団 ERATO プロトニックナノマシンプロジェクト Advanced Technology Research Laboratories, Matsushita E. I. Co., Ltd.／Protonic NanoMachine Project, ERATO, JST、[2]科学技術振興事業団 ERATO プロトニックナノマシンプロジェクト Protonic NanoMachine Project, ERATO, JST
- Abstract
- The bacterial flagellar filament is a helical propeller made of 11 protofilaments of a single protein, flagellin. The filament switches between left- and right-handed supercoiled forms when bacteria switch the swimming mode between running and tumbling. Supercoiling is produced by two different packing interactions of flagellin called L and R. In switching from L to R, the intersubunit distance (~52 Å) along the protofilament decreases by 0.8 Å. We solved the 2.0 Å resolution crystal structure of a 41-kDa fragment of Salmonella flagellin. The crystal contained pairs of antiparallel straight protofilaments having the R-type repeat. By simulated extension of the protofilament model, we identified possible switch regions responsible for the bi-stable mechanical switch.
[1]産業技術総合研究所（旧工業技術院）大阪工業技術研究所 Osaka National Research Institute、[2]関西医科大学 物理学教室 Kansai Medical University、[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、[5]立命館大学 理工学部 Ritsumeikan University
- Abstract
- Hard X-ray microbeam with multilayer Fresnel zone plate has been tested at SPring-8 BL47XU undulator beamline. Focusing properties are evaluated in X-ray wavelength of ＞25 keV. In the scanning microscopy experiment at an X-ray wavelength of 0.045 nm (27.8 keV), a resolution-test-patterns up to 0.2 µm structure was resolved. The focused beam profile at an X-ray wavelength of 0.015 nm (82.7 keV) was measured: the measured focal beam size was 〜 4 µm.
文部科学省（旧科学技術庁）金属材料技術研究所 精密励起場ステーション National Research Institute for Metals
- Abstract
- Trace elements often play significant roles in biological and environmental systems as well as in industrial applications. Total-reflection X-ray fluorescence (TXRF) is an extremely promising tool for ultra trace analysis. Although a brilliant synchrotron source can in principle contribute to upgrade the detection power, an energy-dispersive spectrometer based on a Si(Li) detector, which has been employed in most TXRF experiments so far, restricts the performance. The present report describes our successful experiments at BL40XU using a wavelength-dispersive spectrometer with downsized Johansson-type focusing optics. Because of the c.a. 20 times better energy resolution, the signal to background ratio has been fairly enhanced. The record of the detection limit has been improved down to 1.9 fg, which is almost 10 times better than the world best record reported in 1997.
[1]姫路工業大学 理学部 Himeji Institute of Technology, Faculty of Science、[2]（財）高輝度光科学研究センター JASRI 、[3]東北大学大学院 理学研究科 Graduate School of Science, Tohoku University
- Abstract
- We have distinctively determined the orbital populations of two eg-type (x2-y2 and 3z2-r2) state in the bilayer manganite La2-2xSr1+2xMn2O7 by magnetic Compton profile (MCP) measurement. MCP's were measured along the [001] direction at x=0.35 and 0.42, and fitted by the theoretical profiles obtained from the (MnO6) 8− ab initio calculations. From the fitting analysis, it is found that the MCP clearly detects the hybridization effect of Mn 3d and O 2p orbitals in the eg state. The eg orbital state is dominated by the x2-y2-type orbital, and its population is almost constant with increasing the hole concentration x, while that in the 3z2-r2-type orbital decreases.
[1]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、[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、[3]理化学研究所 播磨研究所 Ｘ線干渉光学研究室、（財）高輝度光科学研究センター Coherent X-ray Optics Laboratory, Harima Institute, RIKEN／JASRI
5. 告知板／ANNOUNCEMENTS
（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
- Abstract
- The sixth symposium on accelerator's power supply system was held on 15th and 16th November 2000 at SPring-8 PR-Center conference room. More than 70 people attended. Many presentations and discussions about, for example, IGBT switching mode power supply for magnets, noise reduction technics, high precision current control technics of accelerators, and so on, have done. Before this symposium, an investigative tour for Hyogo Ion Beam Medical Center, NewSUBARU facility, and SPring-8 facility was held. Announces and registrations for this symposium have been done using only an e-mail and www home page on the Internet.
[1]第5回播磨国際フォーラム実行委員会、姫路工業大学 理学部 Faculty of Science, Himeji Institute of Technology、[2]（財）高輝度光科学研究センター 利用研究促進部門Ⅱ JASRI Life & Environment Division
東京大学 物性研究所 Institute for Solid State Physics, University of Tokyo
放射光利用研究促進機構 （財）高輝度光科学研究センター 企画調査部 Organization for the Promotion of Synchrotron Radiation Research . JASRI Planning Division
（財）高輝度光科学研究センター Japan Synchrotron Radiation Research Institute (JASRI)
仁木工芸㈱ 輸入部 放射線計測機器グループ Niki Glass Co, Ltd. Tokyo Office Group Leader for Nuclear Science
文部科学省（旧：科学技術庁）金属材料技術研究所 National Research Institute for Metals, Ministry of Education, Culture, Sports, Science and Technology
神戸大学大学院 自然科学研究科 Graduate School of Science and Technology, Kobe University
[1]（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、[2]（財）高輝度光科学研究センター 放射光研究所 ビームライン部門 JASRI Beamline Division、[3]大阪大学 核物理研究センター Research Center for Nuclear Physics, Osaka University
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
姫路工業大学 理学部 Himeji Institute of Technology, Faculty of Science
（財）高輝度光科学研究センター 放射光研究所 利用促進部門 JASRI Experimental Facilities Division
6. 談話室・ユーザー便り／OPEN HOUSE･A LETTER FROM SPring-8 USERS
SPring-8利用者懇談会 会長 姫路工業大学 理学部 Faculty of Science, Himeji Institute of Technology
千葉大学大学院 自然科学研究科 Graduate School of Science and Technology Chiba University
SPring-8利用者懇談会 会長 名古屋大学大学院 工学研究科 Graduate School of Engineering, Nagoya University
