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Recent Development of Large-m Supermirror and Very Small D-Spacing Wide-Band multilayer at KURRI

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Recent Development of Large-m Supermirror and Very Small D-S...

作者： m.hino m.Kitaguchi Y.Kawabata Research Reactor Institute Kyoto University

INTRODUCTION:A multilayer with small d-spacing and supermirror with large-m are desirable to enlarge utilization efficiency for neutron scattering experiments(Here m is a maximum critical angle of the mirror in unit of critical angle of nickel).In order to fabricate small d-spacing multilayer with high reflectivity,even in theoretically smooth surface and ideal layer structure,the required number of layer increase the fourth power of *** it is very

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Neutron Spin Phase Imaging for Visualization of Electric Current

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Neutron Spin Phase Imaging for Visualization of Electric Cur...

作者： S.Tasaki Y.Iwata T.Tanaka Y.Abe m.hino Department of Nuclear Engineering Kyoto University Research Reactor Institute Kyoto University

INTRODUCTION:Neutron spin phase contrast (NSPC) imaging is a method to visualize the magnetic field integral along the trajectory of *** principle of NSPC is to measure additional phase difference between spin eigen states of Larmor precessing neutron, by means of neutron spin *** NSPC imaging, neutron intensity changes sinusoidally,via the phase difference of incident *** magnetic field exist on the way of neutron,the sinusoidal curve is shifted,and the shift is proportional to the magnetic field ***,the contrast(visibility) of the sinu-

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Demonstrations of Neutron Resonance Spin Echo for Pulsed Source

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Demonstrations of Neutron Resonance Spin Echo for Pulsed Sou...

作者： m.Kitaguchi m.hino Y.Kawabata S.Tasaki R.maruyama T.Ebisawa JAEA

INTRODUCTION:Neutron spin echo(NSE) is one of the techniques with the highest energy resolution for quasi-elastic scattering by measuring rotation of the neutron *** neutron resonance spin echo(NRSE),two resonance spin flippers(RSFs) replace a homogeneous static magnetic field for spin precession in the conventional *** RSF,which flips the spin of a neutron by exchanging energy between the neutron and an oscillating magnetic field,gives the difference of wavenumber between up- and down-spin components of the neutron.

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Development of Cold Neutron Interferometer with Perfectly Separated Paths

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Development of Cold Neutron Interferometer with Perfectly Se...

作者： H.Funahashi m.Kitaguchi Y.Seki m.hino K.Ta-ketani H.m.Shimizu Osak Electro-Communication Univ.

INTRODUCTION:Neutron interferometry is a powerful technique for studying fundamental physics.A large dimensional interferometer for long wavelength neutrons has the advantage to increase the sensitivity to small *** a kind of interferometer was realized by using multilayer *** mirror is suitable for Bragg reflection of cold *** demonstrated Jamin-type interferometer for cold neutrons using beam splitting etalons(BSEs),which enables us to align the four independent mirrors within required preci-

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Development of a High-Intensity Neutron monochromator

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Development of a High-Intensity Neutron Monochromator

作者： m.Furusaka N.Ishikawa m.hino T.Sato Y.Okusawa F.Fujita A.Homma m.Sugiyama Faculty of Engineering Hokkaido University

INTRODUCTION:Pyrolytic-Graphite(PG) is widely used as a high-integrated-reflectivity neutron monochromator. It is a very good monochromator material for moderate-resolution ***,applications such as small-angle neutron scattering(SANS) or reflectometer instruments need a wavelength-band of more than a few%,possibly about 10%.In such cases,not only unreasonably high mosaicity of more than 2 degrees is required,but it must also be coupled with incident beam that has extremely high beam-divergence of about

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Development of the CCD-Based UCN Detector with Fine Spatial Resolution

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Development of the CCD-Based UCN Detector with Fine Spatial ...

作者： Y.Kamiya S.Kawasaki G.Ichikawa S.Sonoda S.Komamiya m.hino m.Kitaguchi T.Sanuki ICEPP The University of Tokyo Graduate School of Science The University of Tokyo Graduate School of Science Tohoku University

INTRODUCTION:Quantum mechanics says that gravitational interactions can bind particles in the quantized energy levels as well as electromagnetic and strong ***,a few of experiments to observe such levels were carried and the conclusive result have not been derived ***-cold neutrons(UCNs) have lower kinetic energy than Fermi potentials of general *** they can be bound by the earth’s

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Prediction of Turbulent Flow Structure in a Fully Developed Rib-Roughened Narrow Rectangular Channel

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Journal of Thermal Science 2009年第2期18卷 126-136页

作者： md.Shafiqul Islam m.Kaminaga R.hino m.monde Atomic Energy Research Establishment Japan Atomic Energy Agency (JAEA) Department of mechanical Engineering Saga University

Fully developed turbulent water-flow structure over one-side repeated-ribs in narrow two-dimensional rectangular channels was investigated experimentally by Particle Image Velocimetry （PIV） and analytically by the standard k-ε and nonlinear k-ε turbulent models. Two rib-pitch to height ratios （p/k） of 10 and 20 were investigated while the rib height was held constant at 4 mm. The rib height-to-channel equivalent diameter ratio （k/De） was 0.1. The streamwise mean velocity and turbulent kinetic energy distributions at six selected axial stations from the center rib for the two Reynolds number （Re） of 7,000 and 20,000 were obtained and compared with the predicted one. The performance ability in predicting separating and reattaching turbulent water-flow between the standard K-ε and nonlinear k-ε models had yielded no clear conclusion. A large-scale turbulent eddy was generated by the rib promoter and then propagated into the mainstream flow, which led to the deformation of the velocity profile. The turbulent kinetic energy was increased about two times higher at p/k = 20 than that at p/k =10 under the two Reynolds numbers. The effect of the p/k value and the Reynolds number （Re） on reattachment length （XR） was investigated and showed that the p/k and Re had no significant effect on the reattachment length beyond a critical value of Re = 15,000 where XR was found to be approximately 4 times of the rib height under water-flow condition.

关键词： Turbulent water-flow structure repeated-ribs narrow rectangular channels two-dimensional analysis reattachment length

ENVIRONmENTAL FRIENDLY ANODIZING ON AZ91D mAGNESIUm ALLOYS AND COATING CHARACTERISTICS

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Acta metallurgica Sinica(English Letters) 2005年第3期18卷 411-415页

作者： A. Saijo m. hino m. Hiramatsu T. Kanadani Hori metal Finishing Industry Co. Ltd. Abe Ochiai-cho Takahashi-shi Okayama 716-0061 Japan Industrial Technology Research Institute of Okayama Prefecture Haga Okayama-sh i Okayama 701-1296 Japan Industrial Technology Research Institute of Okayama Prefecture Haga Okayama-sh i Okayama 701-1296 Japan Graduate School of Okayama University of Science Ridai-cho Okayama-shi Okayam a 700-0005 Japan

An environmental friendly anodizing treatment (Anomag) from a phosphate-based so lution without heavy metals on AZ91D magnesium alloy was studied. The characteri stics of the coatings, such as structure, composition and corrosion resistance w ere investigated. The effects of this anodizing treatment on the mechanical prop erties were examined. X-ray diffraction (XRD) analysis revealed that the structu re of the coatings is amorphous or glassy. In salt spray tests coatings with an average thickness of 10μm had an anticorrosive performance of over 1000 hours. Fatigue tests revealed that anodizing onto AZ91D magnesium alloy does not affect the fatigue strength. These results demonstrate the utility of this anodizing t reatment on magnesium alloy for application as a structural material, such as in the automotive field.

关键词： magnesium alloy anodizing environmental friendliness

First principles calculation of stable structure and adhesive strength of plated Ni/Fe(100) or Cu/Fe(100) interfaces

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中国有色金属学会会刊：英文版 2009年第4期19卷 988-991页

作者： Ryota NAKANISHI Koji SUEOKA Seiji SHIBA m akoto hino Koji mURAKAmI Ken mURAOKA Department of System Engineering Okayama Prefectural University metallic materials Group Department of Mechanical EngineeringIndustrial Technology Center of Okayam a Prefecture

A study the with first principles calculation of the interfaces of the Ni layer or Cu layer on the Fe(100) surface formed with metal plating was *** or Cu atoms were shown to adopt the corresponding position to the bcc structure of the Fe(100) *** calculations showed that the interfaces of Ni(5 atomic layers)/Fe(100)(5 layers) or Cu(5 atomic layers)/Fe(100)(5 layers) had square *** orientation relationship of Ni/Fe(100) interface corresponds to fcc-Ni(100)//bcc-Fe(100),Ni[011]//Fe[010],and Ni[011]//Fe[001].Similar results were obtained for Cu/Fe(100) *** structure was supported by TEm analysis of plated Ni layer on Fe(100) *** adhesion strength of the Ni/Fe(100) interface evaluated by first principles calculation was higher than that of the Cu/Fe(100) *** experimental results of Hull cell iron plated with Ni or Cu supported the results of the *** results indicate that the first principles calculation,which deals with the ideal interface at the atomic scale,has the potential to evaluate the adhesion strength of metallic material interfaces.

关键词：第一原理计算接口处理稳定结构粘接强度铜原子镀镍胶粘剂界面结合强度