Volume 06, No.5

目次 / Table of Contents

September issue 2001

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

第8回（2001B）利用研究課題の採択について
The Proposals Accepted for Beamtimes in the 8th Public Use Term 2001B

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

Pages 321 - 335 Download PDF (72.71 KB)

2001B利用研究課題の審査を終えて
Report of the Proposal Review Committee in the 8th Public Use Term 2001B

松井　純爾　MATSUI Junji

（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

Pages 336 - 338 Download PDF (17.19 KB)

構造生物学ビームライン（BL41XU，BL40B2）の平成13年後期共同利用期間（2001B）における留保ビームタイムの運用について
Call for the Reserved Beam Time Application 2001B for the Structural Biology (BL40B2, BL42XU) Beamlines

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

Pages 339 - 340 Download PDF (11.58 KB)

2002A 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 341 - 357 Download PDF (130.52 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

Pages 358 - 359 Download PDF (12.35 KB)

2. 共用ビームライン／PUBLIC BEAMLINE

産業利用ビームラインBL19B2の現状
Current Status of Engineering Science Research Beamline BL19B2

岡島　敏浩　OKAJIMA Toshihiro^[1]、本間　徹生　HONMA Tetsuo^[1]、梶原　堅太郎　KAJIWARA Kentaro^[1]、北野　彰子　KITANO Akiko^[1]、池本　夕佳　IKEMOTO Yuka^[1]、佐藤　真直　SATO Masugu^[1]、廣沢　一郎　HIROSAWA Ichiro^[1]、小寺　賢　KOTERA Masaru^[2]、伊藤　真義　ITO Masayoshi^[2]、竹下　邦和　TAKESHITA Kunikazu^[3]

^[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

Pages 360 -363 Download PDF (197.37 KB)

SPring-8共用ビームラインに関する調査について

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

Pages 364 - 367 Download PDF (15.50 KB)

3. その他のビームライン／OTHER BEAMLINES

軟X線光物性ビームラインBL17SU建設計画の概要
Conceptual Design of Soft X-ray Spectroscopy Beamline BL17SU

辛　埴　SHIN Shik^[1]、大浦　正樹　OURA Masaki^[1]、高田　泰孝　TAKATA Yasutaka^[1]、渡邊　正満、WATANABE Masamitsu^[1]、鎌倉　望　KAMAKURA Nozomu^[1]、北村　英男　KITAMURA Hideo^[1]、田中　隆次　TANAKA Takashi^[1]、高橋　直　TAKAHASHI Sunao^[2]、大橋　治彦　OHASHI Haruhiko^[2]

^[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

Pages 368 - 371 Download PDF (35.75 KB)

4. 最近の研究から／FROM LATEST RESEARCH

二次元表示型球面鏡アナライザについて
Two-Dimensional Display-Type Spherical Mirror Analyzer

大門　寛　DAIMON Hiroshi

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.

Pages 372 - 376 Download PDF (803.71 KB)

細菌べん毛素繊維の結晶構造とスイッチ機構
Crystal Structure of the Bacterial Flagellar Protofilament and Its Switch Mechanism

難波　啓一　NANBA Keiichi^[1]、サマティ・ファデル　SAMATEY Fadel, A.^[2]、今田　勝巳　IMADA Katsumi^[2]、長島　重広　NAGASHIMA Shigehiro^[2]

^[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.

Pages 377 - 382 Download PDF (1.39 MB)

磁気コンプトン散乱によるLa_2-2xSr_1+2xMn₂O₇の軌道状態の研究
Study of Orbital State in Bilayer Manganite by Magnetic Compton Profile Measurement

小泉　昭久　KOIZUMI Akihisa^[1]、宮木　智　MIYAKI Satoru^[1]、角谷　幸信　KAKUTANI Yukinobu^[1]、小泉　裕康　KOIZUMI Hiroyasu^[1]、馬越　健次　MAKOSHI Kenji^[1]、坂井　信彦　SAKAI Nobuhiko^[1]、平岡　望　HIRAOKA Nozomu^[2]、廣田　和馬　HIROTA Kazuma^[3]、村上　洋一　MURAKAMI Youichi^[3]

^[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 e_g-type (x²-y² and 3z²-r²) state in the bilayer manganite La_2-2xSr_1+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 e_g state. The e_g 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.

Pages 383-389 Download PDF (1,008.50 KB)

BL29XUL/19LXUに於ける標準型2結晶分光器の液体窒素冷却化
Introdution of Liquid Nitrogen Cooling System to Standard Double Crystal Monochromator at BL29XUL／19LXU

玉作　賢治　TAMASAKU Kenji^[1]、矢橋　牧名　YABASHI Makina^[2]、望月　哲郎　MOCHIZUKI Tetsuro^[2]、石川　哲也　ISHIKAWA Tetsuya^[3]

^[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

Pages 390 - 395 Download PDF (273.61 KB)