| 1. |
石垣 徹, 星川 晃範, 米村 雅雄, 神山 崇, 鳥居 周輝, 森嶋 隆裕, 大石 亮子, 粉末回折装置の概要と構造科学・材料開発に与えるインパクト, 日本結晶学会誌, 10.5940/jcrsj.50.18, Vol.50, No.1, pp.18-23, 2008.02, Here we describe two neutron powder diffractometers, iMATERIA and SHRPD, at the Materials and Life Science Experimental Facility in J-PARC. iMATERIA (IBARAKI Materials Design Diffractometer) has been constructed to be a high throughput versatile diffractometer enabling materials scientists to use it like a chemical analytical instrument in their material development processes. Typical measuring time to obtain 'Rietveld-quality' data is several minutes for the sample size of laboratory X-ray diffractometer. On the other hand, SHRPD (Super High Resolution Powder Diffractometer) has been constructed by J-PARC to promote the best science using the best resolution in the world (Δ<I>d</I>/<I>d</I>=0.03%) . Two instruments will be ready by the Day-One.. |
| 2. |
石垣徹, 星川晃範, 米村雅雄, 神山崇, 鳥居周輝, 森嶋隆裕, 大石亮子, J‐PARCで迎える結晶学の新展開 1.J‐PARCで展開される中性子科学 粉末回折装置の概要と構造科学・材料開発に与えるインパクト, 日本結晶学会誌, 10.5940/jcrsj.50.18, Vol.50, No.1, pp.18-23, 2008.02. |
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R. Oishi, M. Yonemura, Y. Nishimaki, S. Torii, A. Hoshikawa, T. Ishigaki, T. Morishima, K. Mori, T. Kamiyama, Rietveld analysis software for J-PARC, Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 10.1016/j.nima.2008.11.056, Vol.600, No.1, pp.94-96, 2009.02, A new analysis software suite, Z-Code, is under development for powder diffraction data analyses in the Materials and Life Science Facility (MLF) of the Japan Proton Accelerator Research Complex (J-PARC). This software suite comprises data processing, data analyses, graphical user interface and visualization software. As a part of Z-Code, a Rietveld analysis program for neutron (TOF and angle dispersive) and X-ray data, Z-Rietveld, has been developed. Here we report the basic traits and some significant features of Z-Rietveld. © 2008.. |
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T. Ishigaki, A. Hoshikawa, M. Yonemura, T. Morishima, T. Kamiyama, R. Oishi, K. Aizawa, T. Sakuma, Y. Tomota, M. Arai, M. Hayashi, K. Ebata, Y. Takano, K. Komatsuzaki, H. Asano, Y. Takano, T. Kasao, IBARAKI materials design diffractometer (iMATERIA)-Versatile neutron diffractometer at J-PARC, Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 10.1016/j.nima.2008.11.137, Vol.600, No.1, pp.189-191, 2009.02, Ibaraki prefecture, the local government of the area for J-PARC site, was decided to build a versatile neutron diffractometer (IBARAKI Materials Design Diffractometer, iMATERIA) to promote an industrial application for neutron beam in J-PARC. iMATERIA is planned to be a high throughput diffractometer so that materials engineers and scientists can use it like the chemical analytical instruments in their materials development process. It covers in d range 0.18 |
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Shuki Torii, Masao Yonemura, Teguh Yulius Surya Panca Putra, Junrong Zhang, Ping Miao, Takashi Muroya, Ryoko Tomiyasu, Takahiro Morishima, Setsuo Sato, Hidenori Sagehashi, Yukio Noda, Takashi Kamiyama, Super high resolution powder diffractometer at J-PARC, Journal of the Physical Society of Japan, 10.1143/JPSJS.80SB.SB020, Vol.80, No.SUPPL. B, pp.1-20, 2011.12, Super High Resolution Powder Diffractometer, SuperHRPD, is located at about 100 m from a thin side of a decoupled poisoned moderator at the Materials and Life Science Experimental Facility in the Japan Proton Accelerator Research Complex. The first neutron was produced successfully from a spallation neutron source in J-PARC in the end of May of 2008, and SuperHRPD has achieved the world best resolution Δd/d = 0.035% in June using the existing Sirius 1) chamber. In the summer of 2009, a new SuperHRPD chamber was installed aiming at increasing the detector solid angle and expanding d-range / Q-range, with at most 1500 one-dimensional 3He position-sensitive detectors of 1/2 inch in diameter. The on-beam commissioning of the new SuperHRPD was started in the autumn of 2009. © 2011 The Physical Society of Japan.. |
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石垣徹, 星川晃範, 岩瀬謙二, ディアスリスニンティアス, 蘇玉華, 米村雅雄, 富安亮子, 森井幸生, 林眞琴, 神山崇, 汎用中性子回折装置,茨城県材料構造解析装置(iMATERIA)の現状について(III), 日本結晶学会年会講演要旨集, Vol.2012, p.33, 2012.10. |
| 7. |
野田 幸男, 石川 喜久, Zhang Junrong, 鳥居 周輝, 富安 亮子, 神山 崇, 米村 雅雄, 鬼柳 亮嗣, 伊藤 満, 27pXZB-1 SrTi^O_3強誘電相のSHRPD超高分解能粉末構造解析と分極方向(27pXZB 誘電体(ペロフスカイト,量子常誘電性,ナノ粒子,光効果),領域10(誘電体,格子欠陥,X線・粒子線,フォノン)), 日本物理学会講演概要集, Vol.68, No.1, p.1037, 2013.03. |
| 8. |
M. Yonemura, T. Fukunaga, K. Mori, T. Kamiyama, M. Nagao, Y. Ishikawa, S. Torii, Y. Onodera, R. Tomiyasu, H. Asano, T. Sakuma, T. Ishigaki, A. Hoshikawa, K. Aizawa, S. Harjo, K. Kino, Y. Idemoto, N. Kitamura, H. Arai, Y. Uchimoto, Development of an Advanced Special Neutron Powder Diffractometer under Extreme Environment for Materials, MLF Annual Report, Vol.2012, pp.93-94, 2014.02. |
| 9. |
富安亮子, 田村智志, 粉末指数付けソフトウェアCONOGRAPH, 日本結晶学会誌, 10.5940/jcrsj.57.129, Vol.57, No.2, pp.129-130, 2015.04. |
| 10. |
M. Yonemura, T. Fukunaga, K. Mori, T. Kamiyama, M. Nagao, Y. Ishikawa, S. Torii, Y. Onodera, R. Tomiyasu, H. Asano, T. Sakuma, T. Ishigaki, A. Hoshikawa, K. Aizawa, S. Harjo, K. Kino, R. Kanno, M. Hirayama, Y. Idemoto, N. Kitamura, H. Arai, Y. Uchimoto, Development of an Advanced Special Neutron Powder Diffractometer under Extreme Environment for Materials, MLF Annual Report, Vol.2013, pp.88-89, 2015.02. |
| 11. |
M. Yonemura, T. Kamiyama, K. Mori, T. Fukunaga, Y. ishikawa, S. Torii, R. Tomiyasu, K. Kino, T. Naka, M. Morishima, S. Shiotani, S. Taminato, M. Hirayama, R. Kanno, Y. Onodera, Y. Ukyo, H. Arai, Y. Uchimoto, Z. Ogumi, Development of an Advanced Special Neutron Powder Diffractometer under Extreme Environment for Materials, MLF Annual Report, Vol.2014, pp.90-91, 2016.02. |
| 12. |
富安(大石) 亮子, On determination of the structure of a periodic point set from its average theta series (保型形式とその周辺), 数理解析研究所講究録, No.2055, pp.81-95, 2017.10. |
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Ryoko Oishi-Tomiyasu, Application of convex optimization to identification of atomic species from diffraction patterns, Powder Diffraction, 10.1017/S0885715616000804, Vol.32, No.S1, pp.S179-S185, 2017.09, Copyright © International Centre for Diffraction Data 2017. Computational methods and a program to obtain crystal structures that have the perfectly identical diffraction patterns, i.e. structure factors with the same absolute values and the same lattice symmetry are discussed. This is directly related to the uniqueness of solutions in crystal structure determination of single-crystal/powder-crystal samples from diffraction data. In order to solve the problem, it is necessary to solve a system of quadratic equations. The framework of positive-semidefinite programming is used herein to solve the system efficiently.. |
| 14. |
Yoshihisa Ishikawa, Junrong Zhang, Ryoji Kiyanagi, Masao Yonemura, Takeshi Matsukawa, Akinori Hoshikawa, Toru Ishigaki, Shuki Torii, Ryoko Oishi-Tomiyasu, Takashi Kamiyama, Z-MEM, Maximum Entropy Method software for electron/nuclear density distribution in Z-Code, Physica B: Condensed Matter, 10.1016/j.physb.2018.03.034, Vol.551, pp.472-475, 2018.12, © 2018 Elsevier B.V. Maximum Entropy Method (MEM) is one of powerful tools for material science. We developed the program Z-MEM for evaluation of electron and nuclear density distribution by MEM analysis and Fourier synthesis. This code is designed by the multi-threading library OpenMP, so that the calculation performance is significantly improvements for MEM analysis. Z-MEM is bundled in Z-Rietveld, which is Rietveld software for X-ray and neutron powder diffraction, via the application programming interface (API). Since Z-MEM have equipped with the graphical user interface operations, users can perform from Rietveld refinement to MEM analysis seamlessly.. |
| 15. |
富安 亮子, 大域的最適化を用いた先進結晶構造解析 (特集 最適化の数理 : モデリングとアルゴリズム), 数理科学, Vol.57, No.11, pp.28-35, 2019.11. |
