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Ueki, Tadamasa; Niwa, Masakazu
JAEA-Data/Code 2018-005, 94 Pages, 2018/08
JAEA-Data-Code-2018-005.pdf:15.6MB
Mountain development has an influence on long-term changes of uplift, erosion, and groundwater flow related to change in hydraulic gradient. Provenance analysis is one of promising geological methods to understand origin and formation process of mountains. Case study in the Tono area, central Japan has been done for research and development of individual technique to estimate a provenance. In this report, petrological descriptions by meso- and microscopic observations and elemental distributions using scanning X-ray analytical microscope of basement rocks (silicic igneous rocks) from the study area were compiled.
Nara, Yoshitaka*; Kuwatani, Ryuta*; Kono, Masanori*; Sato, Toshinori; Kashiwaya, Koki*
Zairyo, 67(7), p.730 - 737, 2018/07
Information of confining ability of rock is important for the geological disposal of radioactive wastes. To maintain or improve the confining ability of rocks, it is important to seal pores and cracks. In this study, we investigated the precipitation of minerals on the rock surface. As rock samples, we used Berea sandstone and Toki granite in this study. It was shown that precipitation occurred on the surface of rock specimens kept in calcium hydroxide solution for 1 month if the concentration was high. Specifically, if the concentration of calcium hydroxide solution was higher than 300 mg/l, the precipitation occurred obviously. After keeping rock specimens in calcium hydroxide solution, the weight of the rock samples increased and the concentration of calcium ion decreased by the precipitation. It is considered that the calcium ion in water was used for the precipitation on rock surfaces. Since the precipitation has been recognized for rock surfaces, it is possible to seal pores and cracks in rocks. Therefore, it is also possible to keep or decrease the permeability of rocks by the precipitation of calcium compounds.
Baba, Motoyoshi*; Nishikino, Masaharu; Hasegawa, Noboru; Tomita, Takuro*; Minami, Yasuo*; Takei, Ryota*; Yamagiwa, Mitsuru; Kawachi, Tetsuya; Suemoto, Toru
Japanese Journal of Applied Physics, 53(8), p.080302_1 - 080302_4, 2014/08
Times Cited Count：7 Percentile：30.7(Physics, Applied)A grazing incidence reflection-type soft X-ay microscope, using a Fresnel zone plate and a soft X-ray laser with wavelength 13.9 nm and pulse width 7 ps, was developed. Submicron size groove structures made on a Pt film were clearly captured at a single shot exposure, with spatial resolution of about 360 nm. A wide field view of 100 
m square was secured under the Kohler illumination. This microscope also had a large depth of focus of more than 100 m and was proven to have a sufficient performance for observing surface morphological changes.
Okayasu, Satoru; Nishio, Taichiro; Ono, Masao; Mashimo, Tsutomu; Tanaka, Yasutomo*; Iyo, Akira*
Physica C, 445-448, p.245 - 248, 2006/10
Times Cited Count：1 Percentile：6.63(Physics, Applied)Vortex imagings of Tl-2223 thin film are achieved below Tc with a scanning SQUID microscope. Vortex arrangements are almost the same just below Tc, indicating the existence of strong pinning centers in the sample. The origin of the strong pinning centers comes from the morphological inhomogeneity on the surface.
Kasahara, Mikio*; Ma, C.-J.*; Okumura, Motonori*; Kojima, Takuji; Hakoda, Teruyuki; Taguchi, Mitsumasa; Sakai, Takuro; Ohara, Yoshihiro
JAEA-Review 2005-001, TIARA Annual Report 2004, p.293 - 295, 2006/01
Artificial cloud generation experiment was performed using a huge vertical pit located in Kamaishi iron-copper mine to investigate the characteristics of cloud. The physical and chemical properties of individual cloud droplets were examined by microscopic analysis at Kyoto university and micro-PIXE analysis at TIARA. The process of growth of cloud was clarified based on the result on droplet size, its distribution, droplet number concentration, and the change in distribution of chlorine in droplet as the function of size.
Sato, Tatsuhiko; Satoh, Daiki; Endo, Akira; Yamaguchi, Yasuhiro
Journal of Nuclear Science and Technology, 42(9), p.768 - 778, 2005/09
Times Cited Count：17 Percentile：73.42(Nuclear Science & Technology)A new inventive radiation monitor, designated to DARWIN (Dose Assessment system applicable to various Radiations with WIde energy raNges), has been developed for monitoring doses at workspaces of high energy accelerator facilities and on ground. Characteristics of DARWIN were studied by both calculation and experiment. The calculated results indicate that DARWIN gives reasonable estimations of doses at most radiation fields. It was found from the experiment that DARWIN has an excellent property of measuring doses from all particles that significantly contribute to the background dose - photon, muon and neutron with wide energy ranges.
Nishio, Taichiro; Okayasu, Satoru; Suzuki, Junichi; Kadowaki, Kazuo
Physica C, 412-414(Part1), p.379 - 384, 2004/10
We have studied the vortex states in a meoscopic superconductor with geometrical constraints such as disks, triangles, squares, etc. with dimensions between 30-50m using a scanning SQUID microscope (SQM2000,Seiko Instruments Inc.). The sample was fabricated by electron lithography and Focused Ion Beam (FIB) techniques. Quantized vortices enter into a mesoscopic superconductor discretely as a function of magnetic field accompanied by the sequential step-wise jump of magnetization of the superconductor. Quantitative as well as qualitative analyses of spatial vortex arrangement as a function of the number of vortices will be shown in comparison with the recent theoretical predictions.
Hoshiya, Taiji*; Takaya, Shigeru*; Ueno, Fumiyoshi; Nemoto, Yoshiyuki; Nagae, Yuji*; Miwa, Yukio; Abe, Yasuhiro*; Omi, Masao; Tsukada, Takashi; Aoto, Kazumi*
Transactions of the Materials Research Society of Japan, 29(4), p.1687 - 1690, 2004/06
JAERI and JNC have begun the cooperative research of evaluation techniques of structural material degradation in FBR and LWR, which based on magnetic and corrosion properties along grain boundaries. Magnetic method has been proposed as the one of the non-destructive detection techniques on the early stage of creep-damage before crack initiation for aged structural materials of FBRs. The effects of applied stress on natural magnetization were investigated on paramagnetic stainless steels having creep-damages. On the other hand, corrosion properties and magneto-optical characteristics of ion-irradiated stainless steels in the vicinity of grain boundaries were estimated by AFM and Kerr effect microscope, respectively. These degradations were induced by changes in characteristics in the vicinity of grain boundaries. It is found that the initial level of progressing process of damage can detect changes in magnetic and corrosion properties along grain boundaries of aged and degraded nuclear plants structural materials.
Soyama, Kazuhiko; Matsubayashi, Masahito; Masaoka, Sei; Nakamura, Tatsuya; Matsumura, Tatsuya*; Kinoshita, Katsuyuki*
JAERI-Research 2003-032, 22 Pages, 2004/03
JAERI-Research-2003-032.pdf:1.83MB
The neutron zooming tube has been developed using electronic zooming TV readout system for an X-ray microscope. This system consists of the photocathode, the electro-magnetic coil assembly and the CCD TV camera etc.. The photocathode consists of transmission type CsI layer in combination with neutron converters such as Gd foil. The system position sensitive resolution of 20m has been obtained using neutron converter. We have found that it is determined from the distance between the CsI layer and the neutron converter, then the limiting resolution could be improved.
ssbauer microscope using focused X-rayMitsui, Takaya; Kobayashi, Yasuhiro*; Seto, Makoto
Japanese Journal of Applied Physics, Part 1, 43(1), p.389 - 393, 2004/01
Times Cited Count：11 Percentile：42.73(Physics, Applied)A scanning-type synchrotron radiation Mossbauer microscope was designed and installed at the nuclear resonance beamline BL11XU of the SPring-8 facility. The focused Mossbauer probe beam (
20m) is obtained by the combination of a high-resolution monochromator, a multilayer X-ray focusing mirror and a pinhole slit. Using this Mossbauer microscope, we have performed, for the first time,the synchrotron radiation Mossbauer microscopic measurements of nuclear resonant forward scattering from an iron borate single crystal as a function of the sample position. It was found that the observed Mossbauer time spectra depend on the direction of the local hyper fine magnetic field and the local specimen thickness.
Wei, P.; Xu, Y.; Nagata, Shinji*; Narumi, Kazumasa; Naramoto, Hiroshi
Nuclear Instruments and Methods in Physics Research B, 206(1-4), p.233 - 236, 2003/05
Times Cited Count：6 Percentile：43.05(Instruments & Instrumentation)no abstracts in English
Nemoto, Yoshiyuki; Miwa, Yukio; Tsuji, Hirokazu; Tsukada, Takashi
Dai-12-Kai MAGDA Konfarensu (Oita) Koen Rombunshu, p.191 - 196, 2003/00
Development and research about analytical method for the study of corrosion behavior of austenitic stainless steel after irradiation was conducted from the point of view for basic study of IASCC (Irradiation Assisted Stress Corrosion Cracking). Ion irradiations were conducted with several irradiation conditions these were irradiation temperature, radiation damage, the contents of helium (He) implantation. AFM (Atomic Force Microscope) was used to evaluate surface condition of irradiated specimens after corrosion procedure. Corrosion condition was developed to obtain good surface condition of irradiated specimens to evaluate corrosion behavior by AFM. It was succeeded and corrosion behavior at inside of grains and grain boundaries of irradiated specimens was obtained. EBSP (Electron Backscatter Diffraction Pattern) was used to evaluate relation of corrosion behavior with grain boundary character. Moreover, relations of corrosion behavior with irradiation condition were discussed.
Goto, Masahiro*; Ichinose, Yuji; Kawanishi, Shunichi; Fukumura, H.*
Japanese Journal of Applied Physics, Part 2, 38(1A-B), p.L87 - L88, 1999/01
Times Cited Count：8 Percentile：39.79(Physics, Applied)no abstracts in English
Obara, Kenjiro; Kakudate, Satoshi; Nakahira, Masataka; *
J. Robot. Mechatron., 10(2), p.96 - 103, 1998/00
no abstracts in English
Meigo, Shinichiro
Nuclear Instruments and Methods in Physics Research A, 401, p.365 - 378, 1997/00
Times Cited Count：60 Percentile：95.92(Instruments & Instrumentation)no abstracts in English
Nishitani, Takeo; Iguchi, Tetsuo*; Ebisawa, Katsuyuki*; *; Kasai, Satoshi
JAERI-Tech 96-038, 29 Pages, 1996/09
no abstracts in English
Obara, Kenjiro; *; Kakudate, Satoshi; Shibanuma, Kiyoshi; Tada, Eisuke; *; *; *
JAERI-M 92-130, 34 Pages, 1992/09
no abstracts in English
Cu
O
during He-ion irradiation in an electron microscopeMaeta, Hiroshi; Furuno, Shigemi; Hojo, Kiichi; ; Watanabe, Mitsuo
Journal of Nuclear Materials, 179-181, p.1003 - 1006, 1991/00
Times Cited Count：0 Percentile：0.01(Materials Science, Multidisciplinary)no abstracts in English
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Japanese Journal of Applied Physics, 25(12), p.L964 - L966, 1986/12
Times Cited Count：0 Percentile：0.01(Physics, Applied)no abstracts in English
Nihon Genshiryoku Gakkai-Shi, 28(6), p.508 - 513, 1986/00
Times Cited Count：0 Percentile：0.02(Nuclear Science & Technology)no abstracts in English
