Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
He neutron spin filter at J-PARCOkudaira, Takuya; Oku, Takayuki; Ino, Takashi*; Hayashida, Hirotoshi*; Kira, Hiroshi*; Sakai, Kenji; Hiroi, Kosuke; Takahashi, Shingo*; Aizawa, Kazuya; Endo, Hitoshi*; et al.
Nuclear Instruments and Methods in Physics Research A, 977, p.164301_1 - 164301_8, 2020/10
Times Cited Count：10 Percentile：79.13(Instruments & Instrumentation)Kawamura, Seiko; Takahashi, Ryuta*; Ishikado, Motoyuki*; Yamauchi, Yasuhiro*; Nakamura, Masatoshi*; Ouchi, Keiichi*; Kira, Hiroshi*; Kambara, Wataru*; Aoyama, Kazuhiro*; Sakaguchi, Yoshifumi*; et al.
Journal of Neutron Research, 21(1-2), p.17 - 22, 2019/05
The Cryogenics and Magnets group in the Sample Environment team is responsible for operation of cryostats and magnets for user's experiments at the MLF in J-PARC. We have introduced a top-loading 
He cryostat, a bottom-loading He cryostat, a dilution refrigerator insert and a superconducting magnet. The frequency of use of them dramatically becomes higher in these two years, as the beam power and the number of proposal increase. To respond such situation, we have made efforts to enhance performance of these equipment as follows. The He cryostat originally involves an operation software for automatic initial cooling down to the base temperature and automatic re-charge of He. Recently we made an additional program for automatic temperature control with only the sorb heater. Last year, a new outer vacuum chamber of the magnet with an oscillating radial collimator (ORC) was fabricated. The data quality was drastically improved by introducing this ORC so that the magnet can be used even for the inelastic neutron scattering experiments.
Kajimoto, Ryoichi; Ishikado, Motoyuki*; Kira, Hiroshi*; Kaneko, Koji; Nakamura, Mitsutaka; Kamazawa, Kazuya*; Inamura, Yasuhiro; Ikeuchi, Kazuhiko*; Iida, Kazuki*; Murai, Naoki; et al.
Physica B; Condensed Matter, 556, p.26 - 30, 2019/03
Times Cited Count：2 Percentile：10.61(Physics, Condensed Matter)Kajimoto, Ryoichi; Nakamura, Mitsutaka; Inamura, Yasuhiro; Kamazawa, Kazuya*; Ikeuchi, Kazuhiko*; Iida, Kazuki*; Ishikado, Motoyuki*; Murai, Naoki; Kira, Hiroshi*; Nakatani, Takeshi; et al.
Journal of Physics; Conference Series, 1021(1), p.012030_1 - 012030_6, 2018/06
Times Cited Count：3 Percentile：88.67(Nuclear Science & Technology)Sakasai, Kaoru; Sato, Setsuo*; Seya, Tomohiro*; Nakamura, Tatsuya; To, Kentaro; Yamagishi, Hideshi*; Soyama, Kazuhiko; Yamazaki, Dai; Maruyama, Ryuji; Oku, Takayuki; et al.
Quantum Beam Science (Internet), 1(2), p.10_1 - 10_35, 2017/09
Neutron devices such as neutron detectors, optical devices including supermirror devices and 
He neutron spin filters, and choppers are successfully developed and installed at the Materials Life Science Facility (MLF) of the Japan Proton Accelerator Research Complex (J-PARC), Tokai, Japan. Four software components of MLF computational environment, instrument control, data acquisition, data analysis, and a database, have been developed and equipped at MLF. MLF also provides a wide variety of sample environment options including high and low temperatures, high magnetic fields, and high pressures. This paper describes the current status of neutron devices, computational and sample environments at MLF.
single crystalKashiwaya, Hiromi*; Shirai, Kazumi*; Matsumoto, Tetsuro*; Shibata, Hajime*; Kambara, Hiroshi*; Ishikado, Motoyuki; Eisaki, Hiroshi*; Iyo, Akira*; Shamoto, Shinichi; Kurosawa, Itaru*; et al.
Applied Physics Letters, 96(20), p.202504_1 - 202504_3, 2010/05
Times Cited Count：28 Percentile：71.47(Physics, Applied)The 
-axis transport properties of a high-pressure synthesized PrFeAsO single crystal are studied using s-shaped junctions. Resistivity anisotropy of about 120 detected at 50 K shows the presence of strong anisotropy in the electronic states. The obtained critical current density for the -axis of 2.9 
10
A/cm
is two orders of magnitude larger than that in Bi
Sr
La
CuO
. The appearance of a hysteresis in the current-voltage curve below 
is the manifestation of the intrinsic Josephson effect similar to that in cuprate superconductors. The suppression of the critical current-normal resistance (
) product is explained by an inspecular transport in 
-wave pair potential.
Sugawara, Masaaki*; Maruyama, Toru*; Kambara, Hiroshi*
JNC TJ7420 2005-047, 79 Pages, 2003/03
JNC-TJ7420-2005-047.pdf:12.71MB
Configuration and structure of the ore veins of the Toyoha mine, which occur in faults, were studied with the purpose of developing methods for investigating the effect of fault movement to groundwater flow. Information on the shape of the veins were acquired and analyzed. Plane vein maps in some levels and cross sections of four representative vein systems (Tajima-Harima, Izumo-Shinano, Soya, Sorachi) of the Toyoha ore deposit were scanned, and three-dimensional features of vein distributions were recorded as image data. Morphological characteristics of typical veins of the Toyoha ore deposit were extracted from vein maps, geological and mineralogical cross sections and vein sketches. A tendency of vein-shape changes is recognized from the upper to the lower parts; cymoid curve with strong lensing, gentle cymoid curve with relatively constant width, linear vein with relatively constant width in ascending order of depth. This is thought to be a morphological characteristics of shear fracture formed in correspondence with increase of confining pressure. Distribution of vein trace length of the Toyoha mine exist within the range of uncertainty in the figure between fracture trace length and cumulative number of fractures indicated by Ohtsu (2001). Thus, accumulated number of fracture trace length is thought to be in linear relation irrespective of size, region and rock ype.
bulk samples and formation of columner defects on high-Tc supercoductorOkayasu, Satoru; Sasase, Masato; Hojo, Kiichi; Chimi, Yasuhiro; Iwase, Akihiro; Ikeda, Hiroshi*; Yoshizaki, Ryozo*; Kambara, Tadashi*; Sato, H.*; Hamatani, Yutaro*; et al.
Physica C, 382(1), p.104 - 107, 2002/10
Times Cited Count：28 Percentile：75.41(Physics, Applied)no abstracts in English
SrCaCuO
irradiated with GeV heavy ionsKuroda, N.; Ishikawa, Norito; Chimi, Yasuhiro; Iwase, Akihiro; Ikeda, Hiroshi*; Yoshizaki, Ryozo*; Kambara, Tadashi*
Physical Review B, 63(22), p.224502_1 - 224502_5, 2001/06
Times Cited Count：9 Percentile：48.04(Materials Science, Multidisciplinary)no abstracts in English
Kambara, Hiroshi*; Ichinose, Tsutomu*
JNC TJ7420 2005-045, 135 Pages, 2001/03
JNC-TJ7420-2005-045.pdf:25.79MB
To collect information on the relation of three-dimensional distribution of past pathways of groundwater around the fault shear zone, crack, and ground stresses, a document investigation and a local investigation were executed for the Toyoha deposit, Hokkaido as a representative of hydrothermal polymetallic ore veins. In addition, we have supplemented with the basic data concerning the geology and the ore deposit collected by the document investigation (sketch of hanging wall in drifts and drilling core, and geological features deposit maps, etc.), the investigation result was summarized in aspect of the geological and hydrodynamic characteristic of the surrounding bedrock, and the distribution of the fissure of the Toyoha deposit. Mineralization would concentrate on a special part in the fault system and vein structure indicates the history of intermitted precipitation. Therefore, hydrothermal vein system is recognized as a fossil of past pathways of water in deep, the vein systems should be natural analogue of hot water circulation. Current K-Ar dating of Toyoha deposit suggests that the hydrothermal activity with mineralization was continuing over 2 million years. Vein structure of Toyoha shows ore minerals repeatedly precipitate during the time of fissure formation. That is, the pulse is a product of an intermittent nature such as like fissure opening, filling, and destruction etc, under the regional complex stress field.
(Sr,La)CuO and BiSrCaCuO single crystals with columnar defectsKuroda, N.; Ishikawa, Norito; Chimi, Yasuhiro; Iwase, Akihiro; Okayasu, Satoru; Ikeda, Hiroshi*; Yoshizaki, Ryozo*; Kambara, Tadashi*
Physica C, 321(3-4), p.143 - 150, 1999/00
Times Cited Count：11 Percentile：54.6(Physics, Applied)no abstracts in English
Ishikawa, Norito; Chimi, Yasuhiro; Iwase, Akihiro; Maeta, Hiroshi; *; Michikami, Osamu*; Kambara, Tadashi*; *; *; Terasawa, M.*
Nuclear Instruments and Methods in Physics Research B, 135, p.184 - 189, 1998/00
Times Cited Count：15 Percentile：73.06(Instruments & Instrumentation)no abstracts in English
Kageyama, H.*; Kawatsura, Kiyoshi*; Takahashi, R.*; Arai, Shigeyoshi*; Kambara, Tadashi*; Oura, Masaki*; Papp, T.*; Kanai, Yasuyuki*; Awaya, Yoko*; Takeshita, Hidefumi; et al.
Nuclear Instruments and Methods in Physics Research B, 107(1-4), p.47 - 50, 1996/00
Times Cited Count：2 Percentile：31.89(Instruments & Instrumentation)no abstracts in English
I.Kadar*; H.Altevogt*; R.Koehrbrueck*; V.Montemayor*; A.Mattis*; G.Schiwietz*; B.Skogvall*; K.Sommer*; N.Stolterfoht*; Kawatsura, Kiyoshi*; et al.
Physical Review A, 44(5), p.2900 - 2912, 1991/09
Times Cited Count：5 Percentile：39.05(Optics)no abstracts in English
Kawatsura, Kiyoshi*; Sataka, Masao; Naramoto, Hiroshi; Imai, Makoto; Komaki, Kenichiro*; *; *; Kanai, Yasuyuki*; Kambara, Tadashi*; *; et al.
Nuclear Instruments and Methods in Physics Research B, 53(4), p.421 - 425, 1991/04
Times Cited Count：16 Percentile：83.01(Instruments & Instrumentation)no abstracts in English
Kawatsura, Kiyoshi*; Sataka, Masao; *; Komaki, Kenichiro*; Kanai, Yasuyuki*; Naramoto, Hiroshi; *; Kambara, Tadashi*; *; Nakai, Yota; et al.
Nuclear Instruments and Methods in Physics Research B, 48, p.103 - 106, 1990/00
Times Cited Count：17 Percentile：82.1(Instruments & Instrumentation)no abstracts in English
Kambara, Toyozo; Uno, Hidero; Shoda, Katsuhiko; Hirata, Yutaka; Shoji, Tsutomu; Kohayakawa, Toru; Takayanagi, Hiroshi; Fujimura, Tsutomu; Morita, Morito; Ichihara, Masahiro; et al.
JAERI 1045, 11 Pages, 1963/03
no abstracts in English
JRR-2 Control Office; Kambara, Toyozo; Shoda, Katsuhiko; Hirata, Yutaka; Shoji, Tsutomu; Kohayakawa, Toru; Morozumi, Minoru; Kambayashi, Yuichiro; Shitomi, Hajimu; Kokanezawa, Takashi; et al.
JAERI 1027, 57 Pages, 1962/09
no abstracts in English
Kambara, Toyozo; Shoda, Katsuhiko; Hirata, Yutaka; Shoji, Tsutomu; Haginoya, Kinichi; Kohayakawa, Toru; Yamaki, Jikei; Yokota, Mitsuo; Horiki, Oichiro; Yuhara, Shunichi; et al.
JAERI 1023, 120 Pages, 1962/09
no abstracts in English
JRR-2 Operations Office; Kambara, Toyozo; Shoda, Katsuhiko; Hirata, Yutaka; Shoji, Tsutomu; Haginoya, Kinichi; Kohayakawa, Toru; Yamaki, Jikei; Yokota, Mitsuo; Horiki, Oichiro; et al.
JAERI 1024, 79 Pages, 1962/08
no abstracts in English
