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Σ-nucleus potential studied with the(π−,K+)reaction on medium-to-heavy nuclear targets
Saha, P. K.,Noumi, H.,Abe, D.,Ajimura, S.,Aoki, K.,Bhang, H. C.,Dobashi, K.,Endo, T.,Fujii, Y.,Fukuda, T.,Guo, H. C.,Hashimoto, O.,Hotchi, H.,Imai, K.,Kim, E. H.,Kim, J. H.,Kishimoto, T.,Krutenkova, A American Physical Society 2004 PHYSICAL REVIEW C - Vol.70 No.4
Measurements of Neutron-Capture Cross Sections of Palladium Isotopes at the J-PARC/MLF/ANNRI
S. Nakamura,K. Furutaka,S. Goko,H. Harada,A. Kimura,T. Kin,F. Kitatani,M. Koizumi,M. Ohta,M. Oshima,Y. Toh,J. Hori,T. Fujii,S. Fukutani,K. Takamiya,M. Igashira,T. Katabuchi,M. Mizumoto,T. Kamiyama,K. 한국물리학회 2011 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.59 No.23
The operation of a new experimental apparatus called ``Accurate Neutron-Nucleus Reaction measurement Instrument (ANNRI)''in the Material and Life science experimental Facility (MLF) at the Japan Proton Accelerator Research Complex (J-PARC) has been started for neutroncapture crosssection measurements of minor actinides and long-lived fission products. As a part of the measurements, we have measured the time-of-flight spectra of palladium-105, 106, 107 and 108 with a ``4π Ge spectrometer'' installed at the ANNRI. We obtained preliminary results of the cross sections for palladium-107 and 105 in neutron energies ranging from 0.1 eV to 300 eV.
Measurements of Neutron-Capture Cross Sections of ^(244)Cm and ^(246)Cm at J-PARC/MLF/ANNRI
A. Kimura,K. Furutaka,S. Goko,H. Harada,T. Kin,F. Kitatani,M. Koizumi,S. Nakamura,M. Ohta,M. Oshima,Y. Toh,T. Fujii,S. Fukutani,J. Hori,K. Takamiya,M. Igashira,T. Katabuchi,M. Mizumoto,T. Kamiyama,K. 한국물리학회 2011 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.59 No.23
For developments of innovative nuclear reactors, strong demands exist for the improvement of the accuracy of the neutroncapture cross sections of minor actinides (MAs) and long-lived fission products. We have constructed a Ge-spectrometer using the Accurate Neutron-Nucleus Reaction measurement Instrument (ANNRI) in the J-PARC materials and life science experimental facility (MLF). Preliminary neutroncapture cross sections of ^(244)Cm and ^(246)Cm were obtained in the neutron energy range from 1.0 eV up to 300 eV.
Symmetry induced peculiar Rashba effect on thallium adsorbed Si(111) surfaces
Sakamoto, K.,Oda, T.,Kimura, A.,Takeichi, Y.,Fujii, J.,Uhrberg, R.I.G.,Donath, M.,Yeom, H.W. Elsevier Scientific Pub. Co 2015 Journal of electron spectroscopy and related pheno Vol.201 No.-
The geometric symmetry of the surface plays an important role for the spin-orbit-induced spin texture of two-dimensional electronic states. This article reviews the peculiar Rashba spins induced by a C<SUB>3</SUB> symmetry, including the completely spin polarized surface states with the polarization vector oriented perpendicular to the surface, i.e. a direction that is not expected in a typical Rashba system. This review also describes that this peculiar Rashba situation has possibility to suppress backscattering and therefore to greatly improve the efficiency of spin transport, which is an essential issue in the development of high-performance semiconductor spintronic devices.
Ito, K .,Orimo, S .,Fujii, H .,Matsushima, T .,Fukunaga, T . 대한금속재료학회(대한금속학회) 2000 METALS AND MATERIALS International Vol.6 No.6
Nanostructured graphite was prepared by mechanical milling under hydrogen and argon atmospheres. The hydrogen concentration in the sample prepared by roiling under hydrogen atmosphere reaches up to 7.4 mass% (CH_(0.95)). Judging from the radial distribution function determined by the neutron diffraction measurement, there are two types of deuterium (hydrogen) coordinations. On the other hand, the hydrogen concentration does not exceed 0.5 mass% by the gas-phase hydrogenation for the sample prepared by milling under argon atmosphere.
SIMULATION OF EXPERIMENTAL VISUALIZATION METHODS FOR COMPUTATIONAL FLUID DYNAMICS RESEARCH
Y. TAMURA,K. FUJII 한국전산유체공학회 1995 한국전산유체공학회 학술대회논문집 Vol.1995 No.4
In the present paper, visualization techniques in fluid dynamic experiments such as Schlieren photograph are numerically simulated so that the same output as the experimental flow visualization can be obtained from the computed results for the fair comparison. Numerical methods to simulate optical visualizations, that are Schlieren photograph, shadowgraph and interferogram, are considered. Some examples of pictures obtained by the present methods show the importance of the simulations of visualization techniques for the correct comparisons of the computations and experiments.