Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Masaaki Yamakata"'
Autor:
Yasuhiro Inamura, Masaaki Yamakata, Osamu Shimomura, Takeshi Mizutani, Wataru Utsumi, Yoshinori Katayama
Publikováno v:
Science. 306:848-851
Structural transformation between a dense molecular fluid and a polymeric liquid of phosphorus that occurred at about 1 gigapascal and 1000°C was investigated by in situ x-ray radiography. When the low-pressure fluid was compressed, dark and round o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5851e218497853165aa5c6c4a0359e26
https://doi.org/10.1126/science.1102735
https://doi.org/10.1126/science.1102735
Autor:
Osamu Shimomura, Yoshinori Katayama, Wataru Utsumi, Taku Okada, Ken-ichi Funakoshi, Masaaki Yamakata
Publikováno v:
Journal of Physics: Condensed Matter. 14:10497-10504
Since first opening its doors to public research in 1997, SPring-8 has seen the accomplishment of many important studies in a wide variety of fields through its stable operation and cutting edge technology. High-pressure experiments have been carried
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3c1b3f449d35ed4919c94c65741eefc9
https://doi.org/10.1088/0953-8984/14/44/322
https://doi.org/10.1088/0953-8984/14/44/322
Publikováno v:
Physics and Chemistry of Minerals. 29:439-445
An experimental technique to make real-time observations at high pressure and temperature of the diamond-forming process in candidate material of mantle fluids as a catalyst has been established for the first time. In situ X-ray diffraction experimen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4091562082ac05ec8759c791aadfcc61
https://doi.org/10.1007/s00269-002-0254-6
https://doi.org/10.1007/s00269-002-0254-6
Publikováno v:
Journal of Physics and Chemistry of Solids. 61:1483-1487
A temperature-induced second-order phase transition of FeS was observed at 4.6 GPa. The NiAs type phase was stable at 500°C, and it transformed to its super-structured phase with a hexagonal cell near-by 420°C in a temperature cooling process. An a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6b73af2959d25bf3224a91059aa65ea4
https://doi.org/10.1016/s0022-3697(00)00005-6
https://doi.org/10.1016/s0022-3697(00)00005-6
Autor:
Yoshinori Katayama, Masaki Azuma, Takeshi Mizutani, Osamu Shimomura, Wataru Utsumi, Takashi Saito, Masaaki Yamakata
Publikováno v:
Nihon Kessho Gakkaishi. 42:59-67
Current 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 tem
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e769e5485a85f47e4d57a6a911f8337e
https://doi.org/10.5940/jcrsj.42.59
https://doi.org/10.5940/jcrsj.42.59
Autor:
Masaaki Yamakata, Takehiko Yagi
Publikováno v:
Nihon Kessho Gakkaishi. 40:403-408
Cristobalite was compressed under various degree of hydrostaticity in this work. It was clarified that, under high pressure, non-hydrostatic stress affects the crystal structure of high pressure polymorph. A new polymorph of SiO2 was formed under qua
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::29ba5acd04cb804b395d3b8ad630352e
https://doi.org/10.5940/jcrsj.40.403
https://doi.org/10.5940/jcrsj.40.403
Autor:
Takehiko Yagi, Masaaki Yamakata
Publikováno v:
Proceedings of the Japan Academy, Series B. 73:85-88
In order to clarify the effect of non-hydrostaticity of pressure on the crystal lattice of minerals, various pressures with different hydrostaticity were applied to silica (cristobalite) at room temperature and high pressure in situ x-ray observation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::626300a09a40191c4d82c519ba9b16c7
https://doi.org/10.2183/pjab.73.85
https://doi.org/10.2183/pjab.73.85
Publikováno v:
Review of Scientific Instruments. 67:2981-2984
An apparatus to load gases to the sample chamber of the diamond‐anvil cell has been devised. The apparatus is driven by a conventional 50 ton hydraulic press and no gas compressor is required. The gas from a commercial gas bomb is compressed to 150
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f3fe211ce9005d399cf3b1135768a5b3
https://doi.org/10.1063/1.1147084
https://doi.org/10.1063/1.1147084
Publikováno v:
High Pressure Research. 14:287-294
Phase transitions in praseodymium and lanthanum under pressure have been studied using a synchrotron powder X-ray diffraction technique. A structure refinement of the distorted fcc phase of Pr using diffraction data collected with an imaging plate (I
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b68673a7c0723957e267314c396f3ba4
https://doi.org/10.1080/08957959608201413
https://doi.org/10.1080/08957959608201413
Autor:
Kunikazu Takeshita, Makina Yabashi, Tetsuya Ishikawa, Shunji Goto, Haruhiko Ohashi, Masaaki Yamakata
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. :829-831
Despite great variation in the requirements for shielding and hutch design at SPring-8, the individual components can be standardized to a certain extent. Here we describe some of these standardizations and how they have been implemented in some spec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::426c1d6f78a5f781184319df283bc770
https://doi.org/10.1016/s0168-9002(01)00473-9
https://doi.org/10.1016/s0168-9002(01)00473-9