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Volume 42, Issue 1
Displaying 1-15 of 15 articles from this issue
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[in Japanese]2000 Volume 42 Issue 1 Pages 1-2
Published: February 29, 2000
Released on J-STAGE: September 30, 2010
JOURNAL FREE ACCESSDownload PDF (2703K) -
Yukio NODA2000 Volume 42 Issue 1 Pages 3-4
Published: February 29, 2000
Released on J-STAGE: December 10, 2010
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Shuichi EMURA, Tomoya URUGA, Hajime TANIDA2000 Volume 42 Issue 1 Pages 5-11
Published: February 29, 2000
Released on J-STAGE: September 30, 2010
JOURNAL FREE ACCESSOutline and present status of Beamline BL01B1 at SPring-8 are presented. Several typical spectra observed at BL01B1 are shown. XAFS in high energy region and XAFS utilizing the modulation technique, which elucidates the structure at relaxed excited state or intermediate state of chemical reaction, are explored.View full abstractDownload PDF (4740K) -
Yukio NODA, Takahisa SHOBU, Naosi IKEDA2000 Volume 42 Issue 1 Pages 12-23
Published: February 29, 2000
Released on J-STAGE: September 30, 2010
JOURNAL FREE ACCESSPresent status of the Structure Analysis Beamline (BL02B1) is described. This beamline is constructed for structure analysis of a single crystal and powder sample under extreme conditions by four subgroups. The performance on X-ray diffraction is in progress during this half year, and many advanced experiments are now possible to be carried out. Several experimental results are given as examples.View full abstractDownload PDF (10459K) -
Satoru URAKAWA, Osamu OHTAKA, Kenichi FUNAKOSHI, Wataru UTSUMI2000 Volume 42 Issue 1 Pages 24-32
Published: February 29, 2000
Released on J-STAGE: September 30, 2010
JOURNAL FREE ACCESSPerformances of the high pressure in-situ X-ray observation system using a large volume multi anvil press installed at the High-Pressure Mineral Physics Experimental Station at BL04B1 in SPring-8 are introduced. Recent results obtained with this system are reviewed.View full abstractDownload PDF (8489K) -
Kozaburo TAMURA, Masanori INUI, Kazuiko TSUJI, Kenichi FUNAKOSHI, Wata ...2000 Volume 42 Issue 1 Pages 33-40
Published: February 29, 2000
Released on J-STAGE: September 30, 2010
JOURNAL FREE ACCESSThe facilities of the beam line BL04B1 (High-Temperature Station) at SPring-8 are presented and the experimental apparatus installed is described in details. Energy-dispersive x-ray diffraction measurements at BL04B1 for expanded fluid Hg and Se were carried out in the wide density range from the liquid near the melting point to the supercritical region including the metal-nonmetal transition region. The measurements for liquid Te at high temperatures were also made. The structure factor S (k) and the pair distribution function g (r) were obtained. Based on these results structural changes with decreasing density are discussed from the microscopic point of view.View full abstractDownload PDF (3274K) -
-Another Paradime with High Brilliance Photon Source-Hiroyuki OYANAGI, Masashi ISHII, Chul-Ho LEE, N. L. Saini, Yuji KUWAHA ...2000 Volume 42 Issue 1 Pages 41-50
Published: February 29, 2000
Released on J-STAGE: September 30, 2010
JOURNAL FREE ACCESSWe report on the initial test of undulator tuning for the beamline BL10XU at Spring-8. The optics of BL10XU is quite simple, i.e., major optical components are a rotated-inclined double crystal monochromator designed by Ishikawa and a double flat mirror. One of a standard in-vacuum type undulator (U032V) is used. Since a typical energy range of - 1 keV is required as a routine EXAFS scan, both monochromator and undulator gap should be controlled during a scan; an undulator gap is varied so that a monochromator acceptance can track the undulator peak. On varying an undulator gap from 9.6 mm to 22 mm, a wide energy range (5-30 keV) is covered. We demonstrate that undulator tuning can provide glitch-free transmission spectra with a high energy resolution (1.5 eV at 9 keV) .View full abstractDownload PDF (6405K) -
Nozomu HAMAYA, Tetsu WATANUKI2000 Volume 42 Issue 1 Pages 51-58
Published: February 29, 2000
Released on J-STAGE: September 30, 2010
JOURNAL FREE ACCESSRecent advance in high-pressure technique has enabled us to reach a pressure of a few hundreds gigapascals with a diamond anvil cell. At such extremely high pressures, materials are highly compressed and exhibit various novel characters which can not be realized under ambient condition. A diffractometer installed at the second station of BL10XU was designed and constructed for polycrystalline x-ray diffraction measurement at ultrahigh pressures. Recent research activities at this station are described and a future perspective of ultrahigh-pressure synchrotron radiation science is briefly discussed.View full abstractDownload PDF (6643K) -
Wataru UTSUMI, Yoshinori KATAYAMA, Takeshi MIZUTANI, Osamu SHIMOMURA, ...2000 Volume 42 Issue 1 Pages 59-67
Published: February 29, 2000
Released on J-STAGE: September 30, 2010
JOURNAL FREE ACCESSCurrent status of the high pressure research on BL14B1 JAERI beamline at the SPring-8 is presented. A cubic type multi-anvil high pressure device is currently used for an in situ X-ray diffraction studies of materials under high pressure and high temperature conditions. By switching the optics, either white or monochromatic X-rays is available for powder X-ray diffraction experiments with energy dispersive or angle dispersive methods as well as XAFS measurements.View full abstractDownload PDF (6374K) -
Jun'ichiro MIZUKI, Hiroyuki KONISHI, Yasuo NISHIHATA, Masamitu TAKAHAS ...2000 Volume 42 Issue 1 Pages 68-75
Published: February 29, 2000
Released on J-STAGE: September 30, 2010
JOURNAL FREE ACCESSJAERI Group has constructed three beamlines for carrying out their own research at SPring-8. One of the three is the bending magnet Beamline for the purpose of materials research. We will describe here the feature of the beam line and the spectrometer, and also some data which have been recently taken at this beamline.View full abstractDownload PDF (5700K) -
Hiroshi MARUYAMA, Motohiro SUZUKI, Masahisa ITO, Naomi KAWAMURA, Kazum ...2000 Volume 42 Issue 1 Pages 76-86
Published: February 29, 2000
Released on J-STAGE: September 30, 2010
JOURNAL FREE ACCESSStudies of magnetic materials by spectroscopy and diffractometry are developed further using high brilliant light sources at SPring-8. Polarization tunability of incident photons and polarization analysis of scattered X-rays are a promising item for studying electronic and magnetic structures in various magnetic materials. Feasibility of the diffractometer, installed on BL39XU for X-ray magnetic scattering and absorption experiments, is shown by recent results of X-ray magnetic circular dichroism, X-ray magnetic diffraction, and X-ray resonant magnetic scattering. For the experiments, phase retarder using a diamond single crystal plays an essential role for regulation of the polarization states and for recording the magnetic effects with high accuracy.View full abstractDownload PDF (8841K) -
Masahide KAWAMOTO, Yoshiaki KAWANO, Takashi YAMANE, Kunio MIKI, Yukio ...2000 Volume 42 Issue 1 Pages 87-96
Published: February 29, 2000
Released on J-STAGE: September 30, 2010
JOURNAL FREE ACCESSThe Bio-Crystallography beamline (BL41XU) dedicated for X-ray crystallography of biological macromolecules is a public beamline opened from October, 1997. The X-ray source is an in-vacuum type standard undulator at SPring-8, and a rotated inclined double-crystal monochromator includes a pin-post water cooling silicon crystal on which a tremendous heat load from the undulator deposits. The focal spot in an experimental station has a size of 200 micron and 300 micron in horizontal and vertical directions, respectively. The flux is 5×1012 photons/sec for 12.4 keV X-rays at a storage ring current of 100 mA. In order to align optical elements and a diffractometer after every changes of X-ray energy and sample-detector distance, an automated procedure has been developed within the energy range from 6.5 keV to 37.5 keV. The diffractometer specially designed for macromoleculer crystallography at BL41XU is working with a CCD detector and imaging plate detectors. BL41XU has been constructed for two scientific targets: (1) routine structure analyses of biological macromolecules on the MIR-OAS technique and (2) X-ray crystallography on biologically significant supra-complexes and macromolecules crystallized only into a small size less than 50 micron. Almost of beamline commissioning required for the first target have been completed and many crystal structures have already been reported. For the second target of beamline construction, the commissioning will be continued to open the frontier of structural biology.View full abstractDownload PDF (8431K) -
Tetsuro FUJISAWA2000 Volume 42 Issue 1 Pages 97-105
Published: February 29, 2000
Released on J-STAGE: September 30, 2010
JOURNAL FREE ACCESSRIKEN structural biology beamline I (BL45XU) is an undulator beamline with two branches. One is for protein crystallography (PX) and the other is for small-angle x-ray scattering (SAXS) . PX and SAXS experiments can be done simultaneously [Yamamoto et al. (1995) Rev. Sci. Instrum. 66, 1833-1835] . For SAXS branch the clean and stable optics were realized. The use of this Beamline extends the various limits of small-angle scattering technique: measurements of dilute protein solutions, large protein complex and fast time-resolved experiments. These advantages will be fully utilized for high-pressure SAXS measurements.View full abstractDownload PDF (6703K) -
Shin-ichi ADACHI, Hideyuki MIYATAKE, Sam-Yong PARK, Nobuo KAMIYA, Yosh ...2000 Volume 42 Issue 1 Pages 106-113
Published: February 29, 2000
Released on J-STAGE: September 30, 2010
JOURNAL FREE ACCESSRIKEN beamline II (BL44B2) is dedicated to macromolecular crystallography in white and monochromatic X-ray mode, and XAFS of diluted biological systems. The user run was started since April 1998, and lots of scientific applications including time-resolved (intermediate state) protein crystallography, protein crystallography at atomic resolution, phasing with anomalous scattering, membrane protein crystallography, and fluorescence XAFS of diluted metalloproteins have been emerging.View full abstractDownload PDF (6260K) -
[in Japanese], [in Japanese], [in Japanese]2000 Volume 42 Issue 1 Pages 114-115
Published: February 29, 2000
Released on J-STAGE: September 30, 2010
JOURNAL FREE ACCESSDownload PDF (303K)
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