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Nakajima, Kenji; Kawakita, Yukinobu; Ito, Shinichi*; Abe, Jun*; Aizawa, Kazuya; Aoki, Hiroyuki; Endo, Hitoshi*; Fujita, Masaki*; Funakoshi, Kenichi*; Gong, W.*; et al.
Quantum Beam Science (Internet), 1(3), p.9_1 - 9_59, 2017/12
The neutron instruments suite, installed at the spallation neutron source of the Materials and Life Science Experimental Facility (MLF) at the Japan Proton Accelerator Research Complex (J-PARC), is reviewed. MLF has 23 neutron beam ports and 21 instruments are in operation for user programs or are under commissioning. A unique and challenging instrumental suite in MLF has been realized via combination of a high-performance neutron source, optimized for neutron scattering, and unique instruments using cutting-edge technologies. All instruments are/will serve in world-leading investigations in a broad range of fields, from fundamental physics to industrial applications. In this review, overviews, characteristic features, and typical applications of the individual instruments are mentioned.
studied by single-crystal time-of-flight neutron diffractionKawasaki, Takuro; Kaneko, Koji; Nakamura, Ai*; Aso, Naofumi*; Hedo, Masato*; Nakama, Takao*; Ohara, Takashi; Kiyanagi, Ryoji; Oikawa, Kenichi; Tamura, Itaru; et al.
Journal of the Physical Society of Japan, 85(11), p.114711_1 - 114711_5, 2016/11
Times Cited Count：17 Percentile：65.80(Physics, Multidisciplinary)Ohara, Takashi; Kiyanagi, Ryoji; Oikawa, Kenichi; Kaneko, Koji; Kawasaki, Takuro; Tamura, Itaru; Nakao, Akiko*; Hanashima, Takayasu*; Munakata, Koji*; Moyoshi, Taketo*; et al.
Journal of Applied Crystallography, 49(1), p.120 - 127, 2016/02
Times Cited Count：62 Percentile：96.21(Chemistry, Multidisciplinary)Ohara, Takashi; Kiyanagi, Ryoji; Kaneko, Koji; Tamura, Itaru; Nakao, Akiko*; Hanashima, Takayasu*; Munakata, Koji*; Moyoshi, Taketo*; Kuroda, Tetsuya*; Oikawa, Kenichi; et al.
JPS Conference Proceedings (Internet), 8, p.036018_1 - 036018_6, 2015/09
Kawasaki, Takuro; Kaneko, Koji; Aso, Naofumi*; Nakamura, Ai*; Hedo, Masato*; Nakama, Takao*; Onuki, Yoshichika*; Ohara, Takashi; Kiyanagi, Ryoji; Oikawa, Kenichi; et al.
JPS Conference Proceedings (Internet), 1, p.014009_1 - 014009_4, 2014/03
Oikawa, Kenichi; Kawasaki, Takuro; Ohara, Takashi; Kiyanagi, Ryoji; Kaneko, Koji; Tamura, Itaru; Nakamura, Tatsuya; Harada, Masahide; Nakao, Akiko*; Hanashima, Takayasu*; et al.
JPS Conference Proceedings (Internet), 1, p.014013_1 - 014013_5, 2014/03
A new single crystal time-of-flight neutron diffractometer has been installed at BL18 of the Materials and Life Science Experimental Facility of J-PARC. The diffractometer "SENJU" was designed for precise crystal and magnetic structure analyses using a small crystal less than 1.0 mm
under multiple extreme environments such as low-temperature and high-magnetic field. The first neutron beam was delivered to the sample position on March 5, 2012. Subsequently, the hardware and software of SENJU have been checked and confirmed that they worked fine. At the same time, diffraction experiments of several organic and inorganic crystals have been done using NaCl, C12A7, and so on. In these measurements, Bragg reflections in the high-Q region (d-spacing 
0.5 
) were clearly observed and analyzed successfully. In this presentation, we will show the instrument design and performance evaluation of SENJU in detail.
Tamura, Itaru; Oikawa, Kenichi; Kawasaki, Takuro; Ohara, Takashi; Kaneko, Koji; Kiyanagi, Ryoji; Kimura, Hiroyuki*; Takahashi, Miwako; Kiyotani, Tamiko*; Arai, Masatoshi; et al.
Journal of Physics; Conference Series, 340, p.012040_1 - 012040_4, 2012/02
Times Cited Count：12 Percentile：94.58(Physics, Condensed Matter)Yamasaki, Chisato*; Murakami, Katsuhiko*; Fujii, Yasuyuki*; Sato, Yoshiharu*; Harada, Erimi*; Takeda, Junichi*; Taniya, Takayuki*; Sakate, Ryuichi*; Kikugawa, Shingo*; Shimada, Makoto*; et al.
Nucleic Acids Research, 36(Database), p.D793 - D799, 2008/01
Times Cited Count：53 Percentile：70.46(Biochemistry & Molecular Biology)Here we report the new features and improvements in our latest release of the H-Invitational Database, a comprehensive annotation resource for human genes and transcripts. H-InvDB, originally developed as an integrated database of the human transcriptome based on extensive annotation of large sets of fulllength cDNA (FLcDNA) clones, now provides annotation for 120 558 human mRNAs extracted from the International Nucleotide Sequence Databases (INSD), in addition to 54 978 human FLcDNAs, in the latest release H-InvDB. We mapped those human transcripts onto the human genome sequences (NCBI build 36.1) and determined 34 699 human gene clusters, which could define 34 057 protein-coding and 642 non-protein-coding loci; 858 transcribed loci overlapped with predicted pseudogenes.
-type montmorillonite; Potential chemical species of iron contaminantKozai, Naofumi; Inada, Koichi*; Adachi, Yoshifusa*; Kawamura, Sachi*; Kashimoto, Yusuke*; Kozaki, Tamotsu*; Sato, Seichi*; Onuki, Toshihiko; Sakai, Takuro; Sato, Takahiro; et al.
Journal of Solid State Chemistry, 180(8), p.2279 - 2289, 2007/08
Times Cited Count：15 Percentile：49.09(Chemistry, Inorganic & Nuclear)Fe-montmorillonite with Fe ions occupying cation exchange sites is an ideal transformation product in bentonite buffer material. We previously prepared a Fe-montmorillonite sample using a FeCl
solution under an inert gas condition. This study attempted to determine the potential contaminant iron chemical species in the sample. It was found that a small amount of Cl
ions remained dispersed throughout the sample. The Cl ion retention may be due to the adsorption of FeCl
in the initial FeCl solution and the subsequent containment of the Cl ions that are dissociated from the FeCl during excess salt removal treatment. The latter may be explained by the slow release of the remaining Cl ions from the collapsed interlayer of the montmorillonite or the transformation of a minor fraction of the remaining FeCl to iron (III) hydroxide chloride complexes having low solubility.
Kozai, Naofumi; Mitamura, Hisayoshi; Onuki, Toshihiko; Sakai, Takuro; Sato, Takahiro; Oikawa, Masakazu*
Nuclear Instruments and Methods in Physics Research B, 231(1-4), p.530 - 535, 2005/04
Times Cited Count：9 Percentile：54.76(Instruments & Instrumentation)Applicability of micro-PIXE analysis to quantitative evaluation of heavy elements sorbed on minerals was investigated to get better understanding of sorption and distribution of heavy elements onto mixture of minerals in soil. For this, external standards, that is, heavy element-sorbing minerals of uniform shape and size, were analyzed by micro-PIXE. It was found that such external standards were available to quantitative evaluation by micro-PIXE though their applicability may be limited.
Oikawa, Kenichi; Kaneko, Koji; Tamura, Itaru; Ohara, Takashi; Kawasaki, Takuro; Kimura, Hiroyuki*; Noda, Yukio*; Takahashi, Miwako*; Kiyotani, Tamiko*; Kiyanagi, Ryoji*; et al.
no journal, ,
A new single crystal neutron diffractometer SENJU is now under construction at a high pace in MLF at J-PARC. SENJU will realize precise structure analysis under the combined extreme conditions such as high-magnetic field and low temperature. The construction will be completed at the end of 2010 fiscal year, and has aimed at the first beam acceptance before the summer of 2011. In the presentation, detailed instrument specs will be introduced, and a concrete sample environment etc. will be described.
Kiyanagi, Ryoji; Oikawa, Kenichi; Tamura, Itaru; Ohara, Takashi; Kawasaki, Takuro; Kaneko, Koji; Nakao, Akiko*; Hanashima, Takayasu*; Munakata, Koji*; Kimura, Hiroyuki*; et al.
no journal, ,
Kawasaki, Takuro; Oikawa, Kenichi; Ohara, Takashi*; Kiyanagi, Ryoji; Tamura, Itaru; Kaneko, Koji; Nakamura, Tatsuya; Sakasai, Kaoru; Nakao, Akiko*; Hanashima, Takayasu*; et al.
no journal, ,
no abstracts in English
Ohara, Takashi; Kiyanagi, Ryoji; Kawasaki, Takuro; Oikawa, Kenichi; Kaneko, Koji; Tamura, Itaru; Nakao, Akiko*; Hanashima, Takayasu*; Munakata, Koji*; Kimura, Hiroyuki*; et al.
no journal, ,
SENJU is a new single crystal time-of-flight neutron diffractometer installed at BL18 of J-PARC. SENJU is designed for precise crystal and magnetic structure analyses under multiple extreme environments such as low-temperature, high-pressure and high-magnetic field, and also designed for diffraction measurements of small single crystals less than 1.0 mm
in volume. We have successfully achieved structure analysis of a laboratory X-ray size (0.1 mm) single organic crystal, measurement and visualization of a complex-shape diffuse scattering pattern and measurement of higher order magnetic reflections in high-Q region (Q
16 
) by using SENJU. Those results show that the performance of SENJU is as we expected.
Kaneko, Koji; Munakata, Koji*; Dohi, Yuki*; Noda, Yukio; Hanashima, Takayasu*; Sato, Kaoru*; Kawasaki, Takuro; Kiyanagi, Ryoji; Nakao, Akiko*; Ohara, Takashi; et al.
no journal, ,
(R=Tb, Dy, Ho) by single crystal neutron diffractometer SENJUKawasaki, Takuro; Kaneko, Koji; Watanuki, Ryuta*; Sanada, Naoyuki*; Suzuki, Kazuya*; Ohara, Takashi; Kiyanagi, Ryoji; Oikawa, Kenichi; Tamura, Itaru; Nakao, Akiko*; et al.
no journal, ,
no abstracts in English
Kiyanagi, Ryoji; Noda, Yukio*; Ohara, Takashi; Kawasaki, Takuro; Oikawa, Kenichi; Kaneko, Koji; Tamura, Itaru; Hanashima, Takayasu*; Moyoshi, Taketo*; Nakao, Akiko*; et al.
no journal, ,
no abstracts in English
Kawasaki, Takuro; Kaneko, Koji; Aso, Naofumi*; Nakamura, Ai*; Hedo, Masato*; Nakama, Takao*; Onuki, Yoshichika*; Ohara, Takashi; Kiyanagi, Ryoji; Oikawa, Kenichi; et al.
no journal, ,
no abstracts in English
H(SeO)Kiyanagi, Ryoji; Matsuo, Yasumitsu*; Ishikawa, Yoshihisa*; Noda, Yukio*; Ohara, Takashi; Kawasaki, Takuro; Oikawa, Kenichi; Kaneko, Koji; Tamura, Itaru; Hanashima, Takayasu*; et al.
no journal, ,
The materials represented as MH(XO) (M=alkali metals, X=Se, S) are known to exhibit high protonic conductivities at relatively low temperature. Although the high protonic conductivity is considered to be due to the disorder of the hydrogen bonds in the materials, details have not been well understood. In addition, clarification of the phase transition to the high proton conducting phase is important in order to understand the realization of the high protonic conductivity. In this study, a high temperature neutron structural study was carried out on RbH(SeO), and the solid solution of Rb
K
H(SeO) were also investigated by means of conductivity measurements and neutron structural studies. The high temperature neutron structure analyses revealed that the protons in the high proton conducting phase were two dimensionally distributed, which is considered to be the direct observation of the conducting protons. The solid solution exhibited non-linear decreases of the phase transition temperatures as the K concentration increased. The K ions were found to prefer to occupy one of two possible sites, of which occupancies apparently have close relationship with the phase transition temperature.
Oikawa, Kenichi; Tamura, Itaru; Ohara, Takashi; Kaneko, Koji; Kawasaki, Takuro; Nakamura, Tatsuya; Sakasai, Kaoru; Arai, Masatoshi; Kimura, Hiroyuki*; Kiyanagi, Ryoji*; et al.
no journal, ,
A new single crystal diffractometer SENJU is currently under construction in the MLF BL18 at J-PARC. SENJU is designed to collect diffraction data by use of a laboratory XRD specimen size, and aimed for a precise structure analysis under combined environmental conditions. Very wide variety of experiments will be performed, such as low-temperature, under magnetic field, high pressure, and so on. As for the most important component, detector system, is improved and optimized version of that of the iBIX system which is currently working well. The construction of SENJU will be completed in March 2011, and the instrument will be received the first neutron before summer maintenance period of 2011.
