Kamiyama Takashi

Faculty of Engineering　Applied Quantum Science and Engineering　Quantum Engineering for MaterialsProfessor
Last Updated :2026/03/05

■Researcher basic information

Degree

  • (BLANK), Tohoku University
  • (BLANK), Tohoku University

Researchmap personal page

J-Global ID

Research Keyword

  • 結晶組織
  • neutron imaging
  • 動的構造
  • ガラス
  • 液体
  • Dynamical Structure
  • Glass
  • Liquid

Research Field

  • Energy, Quantum beam science, Neutron engineering
  • Nanotechnology/Materials, Inorganic materials
  • Nanotechnology/Materials, Basic physical chemistry
  • Natural sciences, Mathematical physics and basic theory

Educational Organization

■Career

Career

  • Apr. 2019 - Present
    北海道大学大学院, 教授
  • Apr. 2005 - Mar. 2019
    北海道大学大学院, 准教授
  • Apr. 1996 - Mar. 2005
    - 北海道大学大学院 助教授
  • 1991 - 1996
    Hokkaido University
  • 1991 - 1996
    Hokkaido University, Research Assistant
  • 1996
    - Hokkaido University, Associate Professor

Educational Background

  • 1991, Tohoku University, 工学研究科, 材料物性学, Japan
  • 1991, Tohoku University, Graduate School, Division of Engineering
  • 1987, Tohoku University, Faculty of Engineering, 材料物性学科, Japan
  • 1987, Tohoku University, Faculty of Engineering

Committee Memberships

  • Apr. 2022 - Mar. 2024
    日本中性子科学会, 評議員, Society
  • Apr. 2018 - Mar. 2020
    日本中性子科学会, 評議員, Society
  • 2002
    日本中性子科学会, 地区編集委員, Society

■Research activity information

Awards

  • Sep. 2016, 日本金属学会, 第64回 論文賞　　　　　　　　　　　　　　　
    Relation between Vickers Hardness and Bragg-Edge Broadening in Quenched Steel Rods Observed by Pulsed Neutron Transmission Imaging (Materials Transactions, Vol.56, No.8)
    佐藤博隆;佐藤友哉;塩田佳徳;加美山隆;Anton S. Tremsin;大沼正人;鬼柳善明
  • Sep. 2012, 日本金属学会, 第60回 論文賞　　　　　　　　　　　　　　　
    A Rietveld-Type Analysis Code for Pulsed Neutron Bragg-Edge Transmission Imaging and Quantitative Evaluation of Texture and Microstructure of a Welded alpha-Iron Plate (Materials Transactions, Vol.52)
    佐藤博隆;加美山隆;鬼柳善明

Papers

Other Activities and Achievements

Books and other publications

  • DOS/Vパソコンによる科学計測入門(共著)　　　　　　　　　　　　　　　
    NFS出版, 1994
  • Introduction to the Scientific Measurements Using DOS/V Personal Computers　　　　　　　　　　　　　　　
    1994

Lectures, oral presentations, etc.

Affiliated academic society

  • 日本中性子科学会　　　　　　　　　　　　　　　
  • 日本原子力学会　　　　　　　　　　　　　　　
  • 物理学会　　　　　　　　　　　　　　　
  • 化学会　　　　　　　　　　　　　　　
  • 金属学会　　　　　　　　　　　　　　　

Works

  • eV中性子による中性子散乱の研究　　　　　　　　　　　　　　　
    2001
  • A study of Neutron Scattering by eV Neutron　　　　　　　　　　　　　　　
    2001
  • 液体金属の中性子散乱　　　　　　　　　　　　　　　
    1999
  • Neutron Scattering of Liquid Metals　　　　　　　　　　　　　　　
    1999

Research Themes

  • 天然の白雲母を用いた暗黒物質の探索実験DMICAのための基盤研究
    科学研究費助成事業
    01 Apr. 2025 - 31 Mar. 2028
    廣瀬 重信, 中 竜大, 小國 健二, 常 青, 加美山 隆, 長谷部 徳子, 鈴木 勝彦, 星野 靖, 阿部 なつ江, 河村 洋史, 山崎 誠子
    日本学術振興会, 基盤研究(C), 国立研究開発法人海洋研究開発機構, 25K07350
  • マルチエネルギー中性子同時ラジオグラフィ法を利用するシナジーイメージングの高度化
    科学研究費助成事業
    01 Apr. 2024 - 31 Mar. 2028
    加美山 隆
    日本学術振興会, 基盤研究(B), 北海道大学, 24K01392
  • Development of neutron resonance absorption thermometry aimed at practical application to industrial usage
    Grants-in-Aid for Scientific Research
    01 Apr. 2017 - 31 Mar. 2021
    Kamiyama Takashi
    In this study, we have applied the neutron resonance absorption spectroscopy (N-RAS) to a rotating neutron resonance absorber simulating a working machine, and developed the temperature analysis with a standard curve constructed by the aid of particle transport simulation (N-RAS/PTS method). We found that by the method the temperature of the rotating object can be measured non-destructively, remotely and without contact, with an accuracy of several kelvin from room temperature to 600 K. For N-RAS/PTS measurement does not require any restriction on the neutron beam irradiation field, and synchronization between the accelerator operation and sample rotation. The N-RAS/PTS method can be used to prepare a standard curve in advance as long as the sample structure is known, which allows for efficient use of measurement time.
    Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (B), Hokkaido University, 17H03515
  • Imaging of crystallographic structure and physical quantities of materials and spaces by using pulsed neutrons
    Grants-in-Aid for Scientific Research
    01 Apr. 2011 - 31 Mar. 2016
    KIYANAGI Yoshiaki, KAMIYAMA Takashi, FURUSAKA Michihiro, UNO Shoji, MOCHIKI Koichi, SHINOHARA Takenao, KINO Kohichi, SATO Hirotaka, HASEMI Hiroyuki, KAI Tetsuya, SHIOTA Yoshinori, IWASE Kenji, YASHIRO Wataru, OTAKE Yoshie
    We improved a pulsed neutron imaging method using energy analysis and promoted its applications. First, we improved a data analysis code and applied it to analyze martensite phase of quenched steels, a Japanese sword and a new material, and could develop a method to measure hardness non-destructively. CT methods were examined. A hydrogen storage material could be also studied. An imaging method of small angle scattering was developed. Quantitative analysis of a resonance absorption spectrum became feasible. Magnetic field was measured with good accuracy and the method was applied to a magnetic foil. Furthermore, we succeeded in phase contrast measurements using pulsed neutrons firstly in the world. A high counting rate detector and a camera type detector with short channel width of time of flight measurement were successfully manufactured.
    Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (S), 23226018
  • Development of neutron resonance absorption spectroscopy for high-efficiency multi-point non-destructive temperature measurement
    Grants-in-Aid for Scientific Research
    01 Apr. 2012 - 31 Mar. 2015
    KAMIYAMA Takashi
    Neutron resonance absorption spectroscopy (N-RAS) with a pulsed neutron source can distinguish the dynamics of individual nuclides by their resonance peak widths That can identify the motions of a particular nuclide with its resonance energies, and analyze the dynamics of nuclides from the Doppler broadening of the resonance peaks due to their thermal motion. We applied this technique to the nondestructive thermometry of the object inside.
    In this study, we applied prompt gamma-ray type N-RAS, but it is inefficient for imaging because it needs spatial beam scan. If we put multiple nuclides each location, it can measure the temperature of the desired location at the same time. We measured the resonance absorption spectrum of a heated sample which was composed with multiple nuclides. The analyzed nuclides were Ta-181, Ag-109 and Sm-147 in the same sample object. Each nuclide indicates a good consistency. The difference between analyzed and sample temperature is under 5 K in each nuclide.
    Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (C), Hokkaido University, 24510116
  • Systematic Study on Neutron Capture Reaction Cross Sections for the Technological Development of Nuclear Transmutation of Long-Lived Nuclear Wastes
    Grants-in-Aid for Scientific Research
    01 Apr. 2010 - 31 Mar. 2015
    IGASHIRA Masayuki, KATABUCHI Tatsuya, HARADA Hideo, NAKAMURA Shoji, IWAMOTO Nobuyuki, KIMURA Atsushi, HORI Jun-ichi, KIYANAGI Yoshiaki, KAMIYAMA Takashi, KINO Koichi, HIRAGA Fujio, YASHIMA Hiroshi
    The objective of the present study was to contribute to the improvement of the accuracy of database for neutron capture reaction cross sections used for the technological development of nuclear transmutation of long-lived nuclear wastes. First, the precise measurements of capture cross sections of long-lived nuclear wastes, i.e. Zr-93, Tc-99, Pd-107, I-129, Np-237, Am-241, Am-243, Cm-244, Cm-246, and related stable isotopes were performed. Then, theoretical analysis of the measured results was systematically performed, and the capture reaction mechanism of long-lived nuclear wastes was elucidated. Finally, reliable calculated capture cross sections for all long-lived nuclear wastes and in the whole neutron energy region were supplied.
    Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (S), Tokyo Institute of Technology, 22226016
  • Three dimensional measurement of refractive index using phase tomography
    Grants-in-Aid for Scientific Research
    2009 - 2011
    TOMIOKA Satoshi, NISHIYAMA Shusuke, KAMIYAMA Takashi, SAKASHITA Hiroto
    In measurement of distribution of gas temperature or concentration of liquid, the correct measurement is difficult, since the condition of the object to be measured is changed due to the sensor (e.g thermo couple) itself. In this study, we propose a phase tomography that is a coupling method of optical interferometer and computed tomography that is three dimensional non-destructive measurement. Experimental measurement of three dimensional gas temperature distribution agree with theoretical distribution qualitatively.
    Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (C), Hokkaido University, 21560197
  • Visualization and mining of multi-dimension data obtained by neutron/gamma-ray coupled CT
    Grants-in-Aid for Scientific Research
    2009 - 2011
    KAMIYAMA Takashi, KIYANAGI Yoshiaki
    Neutron resonance absorption spectroscopy (N-RAS) using a pulsed neutron source can be applied to time-of-flight (TOF) radiography analysis can be reconstructed as the tomograms of nuclide distributions using computed tomography (CT). The problem is that the available spatial resolution is not sufficient for radiography imaging. In this study, we combined the neutron and gamma-ray (X-ray) radiography, which utilize the gamma-rays (or X-rays) at the same time as the neutron pulse is emitted, to improve the spatial resolution of the quantitative reconstruction of the neutron tomogram. And, we applied the neutron image intensifier with the shutter function to the Bragg edge radiography of material distribution.
    Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (B), Hokkaido University, 21360459
  • Performances of barrier materials in geological disposal : mechanistic evaluation through mesoscopic analysis
    Grants-in-Aid for Scientific Research
    2008 - 2010
    KOZAKI Tamotsu, TOMIOKA Satoshi, NISIYAMA Shusuke, KAMIYAMA Takashi, SASAKI Takayuki, KOZAI Naofumi
    As a fundamental study for the safety assessment of the geological disposal of high-level radioactive waste, the mesoscopic structures of the expected barrier materials (bentonite and sedimentary rock) were characterized by X-ray diffraction analysis, X-ray micro CT observation and μ-PIXE analysis. The hydraulic conductivity, diffusivity, and distribution coefficient of radioactive tracers were determined as indicators in order to relate the barrier performance to the mesoscopic structures.
    Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (B), Hokkaido University, 20360415
  • Study on change of transmission cross sections and development of new application field in spectroscopic imaging using a pulsed neutron transmission method
    Grants-in-Aid for Scientific Research
    2008 - 2010
    KIYANAGI Yoshiaki, FURUSAKA Michihiro, KAMIYAMA Takashi, MOCHIKI Kohichi, HIRAGA Fujio, KANEKO Junichi, IWASE Kenji, HARADA Masahide, OOI Motoki, SATO Setso, SAGEHASHI Hidenori
    It has been clarified that texture in metals reflects the neutron transmission cross section and the world's first analysis code for deducing quantitative information of the texture, crystallite size and strain has been developed. By using this code texture and crystallite size of a welded iron were investigated, and also texture, crystallite size and strain of iron during in-situ tensile test were successfully imaged. Furthermore, a camera system applicable to a pulsed neutron source has been developed.
    Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (A), Hokkaido University, 20246136
  • Advanced pulsed-neutron research on quantum functions in nano-scale materials
    Grants-in-Aid for Scientific Research
    2004 - 2008
    IKEDA Susumu, ITOH Shinichi, TORIKAI Naoya, KAMIYAMA Takashi, OTOMO Toshiya, FURUSAKA Michihiro, FUKUNAGA Toshiharu, YOSHIZAWA Hideki, SAITO Tsutomu, AKIBA Etsuo, NASU Keiichiro, YAMADA Kazuyoshi, ARAI Masatoshi
    本計画では、大強度パルス中性子源の建設が世界的に進む中で、我が国が将来先導することが期待される表面・界面の精密構造研究、グリーンマテリアルの機能発現機構研究、非一様系の構造とダイナミクス研究、水素結合を基調とする生体分子ネットワーク研究、強相関物質の物性発現機構の研究を深化させ、新しい研究方向を確立させた。また、医学や考古学のような全く新しい分野での中性子利用の可能性を示すことに成功した。これに加えて、世界のパルス中性子施設と協力してパルス中性子科学技術の革新を行い、多くの基盤技術や解析手法を実現させ、これらを用いた新しい中性子実験装置の提案に至った。
    Japan Society for the Promotion of Science, Grant-in-Aid for Creative Scientific Research, High Energy Accelerator Research Organization, 16GS0417
  • Development of neutron phase space transfer optical devices
    Grants-in-Aid for Scientific Research
    2005 - 2007
    KANEKO Junichi, FURUSAKA Michihiro, FUJITA Fumiyuki, KIYANAGI Yoshiaki, KAMIYAMA Takashi, OTAKE Yoshie
    Changes in neutron intensity and diffraction angle form a vibrating quartz single crystal were investigated by a 2D neutron detector and time-of-flight method.
    A X-cut quartz single crystal in size of 3mm×120mm×14mm was used in an experiment. Quartz single crystal has polarization according to a X-axis, thus, perpendicular cut to this axis, I.e., X-cut has the largest displacement. Bias voltage of 40 V was applied to aluminum electrodes fabricated on the quartz crystal, and it was moved in the characteristic vibration frequency of 22.7 kHz. Maximum displacement of c.a. 5μm was observed using a microscope.
    A neutron diffraction experiment was carried out on the ULS (Ultra Small angle neutron scattering) system in JRR-3M; neutron beam of wavelength of 4.7 angstrom was used. A combination of a ZnS:Li scintillator and a position sensitive photo multiplier was used as a neutron detector. Neutron diffraction patterns were obtained with a vibrating quartz single crystal in 22.7 kHz; change of neutron diffraction patterns according to vibration period. Neutron intensity had two strong components. Velocity of 4.7 angstrom neutrons are c.a. 840 m/s, thus they move 1.8 cm in 44μs, I.e., a half of the vibration period. By change of 1.8 cm in position of the detector, neutron intensity was changed according to phase shifting in pi.
    Experimental results were compared with theoretical estimation. In the case of displacement caused by the Doppler effect was larger than that caused by deformation, experimental results of time dependence of diffracted neutrons' intensity were suit for a theoretical result.
    Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (B), Hokkaido University, 17360448
  • New Material Characterization method by Using a pulsed Neutron Transmission Spectroscopic Radiography
    Grants-in-Aid for Scientific Research
    2005 - 2007
    KIYANAGI Yoshiaki, KAMIYAMA Takashi, KANEKO Jyunichi, TOMIOKA Satoshi, TAKENAKA Nobuyuki, FURUSAKA Michihiro
    Spectroscopic neutron radiography using a pulsed neutron can give structural information of materials since it has neutron cross section data at each pixel. Especially, at low energy region of the cross section Bragg edges appear which reflect the crystal structure of the materials. The shift of the Bragg position gives strain of the crystal. We performed the experiment on the iron sample which would have strain due to bending. We could clearly observe the strain position and amount of the strain. It was found that the strain appeared on specific crystal planes. It is also indicated that the total neutron cross section around the Bragg edge depended on the grain size of the crystalitte and showed that the cross section decreased proportional to the grain size by a model experiment. Furthermore, the crystal structural change around the welded position of the SS-Iron sample and Iron-Iron sample. The crystal structure change had similar tendency in both sample. Naturally, far from the weld position the cross section showed the typical feature of Bragg edges of iron and SS, as approaching the weld position the edge became sharper, and at weld position the edge had a sharp edge implying the isotropic distribution of the crystallittes. On the other hand, at high energy we can utilize the resonance absorption to get image of elements or nuclei. We performed transmission measurement of the heavy material to get CT image, and it is suggested that the method was also useful for imaging the element distribution and also that we may use this to measure the temperature by analyzing the resonance peak. We developed the sensor of the imaging detector based on Gd composite. We succeeded in making a test detector and also obtained images by using the neutron beam.
    As mentioned above, the spectroscopic neutron imaging using the pulsed neutron sources are very powerful tool to investigate micro structure of the materials, such as strain, crystallite size, distribution of crystallite and so on. Now, the operation of the big proton accelerator neutron source is just about to take place. We will get much higher quality data by using such high intensity sources and also get much detailed information about the sample materials. Therefore, we are now on the stage to develop the method further to promote the industrial applications.
    Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (A), Hokkaido University, 17206096
  • Developmental and applicational study of neutron CT-scan measurement
    Grants-in-Aid for Scientific Research
    2004 - 2005
    KAMIYAMA Takashi
    Neutron resonance absorption spectroscopy (N-RAS) associated with computer tomography was applied to nuclide distribution analysis and thermometry for homogeneous and inhomogeneous bulk objects. This new method provides 2-dimensional distributions of nuclide positions or temperatures on the planar cross-section of a bulk object as information from remote-sensing and non-destructive analysis.
    The study was carried out on the neutron resonance absorption spectrometer DOG installed at KENS at the High Energy Accelerator Research Organization (KEK) in Japan. Measurements were undertaken by recording the spectra for each sample object's direction and neutron slit position to include all the spatial information inside the object. With the spectrum for the all combinations of the slit positions and the rotation angle, the CT calculations were carried out using the 2-dimensional Fourier transformation or maximum entropy methods.
    The nuclide positions reconstructed by CT agree with the actual object structure, and the reconstructed temperature distribution is close to the estimated real distribution. To confirm the validity of this method we have undertaken simulation calculations. This simulation was carried out as the object had the same estimated temperature distributions and the statistical conditions as the experiment. The simulation of the experiment correctly reproduced the result. For greater accuracy, we need to achieve finer spatial resolution and better statistical reliance on N-RAS. The development of this novel approach has links to new industrial applications utilizing neutrons for remote-sensing and non-destructive thermometry ; thus being potentially useful for various industrial developments.
    Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (C), HOKKAIDO UNIVERSITY, 16560622
  • Development of high efficiency pursed neutron source by using a new material of methane hydrate
    Grants-in-Aid for Scientific Research
    2002 - 2004
    KIYANAGI Yoshiaki, KAMIYAMA Takashi, HIRAGA Fujio, SAWAMURA Teruko, KANEKO Junichi, FURUSAKA Michihiro
    Methane hydrate has been expected as a cold neutron moderator material giving higher intensity over wide energy range. We have performed experimental studies mainly. We measured neutron inelastic scattering at ISIS in UK to know the neutron cross-section characteristics. The methane molecule in methane hydrate seemed to rotate freely since the rotational energy level was 1.1meV which is almost same as the energy level of free rotation of methane. We could deduce the translational modes in the small and large ice cages. The ice vibrational mode and librational mode in methane hydrate were almost similar to those of ice In although there existed small distortion. These data suggested that methane hydrate cross section can be simulated linear combination of cross sections of both materials. As a moderator the effect of methane is important but the content of methane is not so high in methane hydrate.
    So, we performed moderator experiments to observe the neutronic performance of methane hydrate. We studied a coupled and a decoupled moderators. Methane and hydrogen moderator data were also obtained fro the comparison. In the case of the coupled moderator, the shape of the energy spectrum of methane hydrate was similar to that of ice, the peak energy of methane hydrate moderator was little bit higher than those of other materials of methane and hydrogen. Spectral intensity around the cold neutron region was much lower than other materials. However, around the thermal neutron region the intensity was higher. In the case of the decoupled moderator the spectral intensity was approaching that of hydrogen moderator but much lower than methane. The pulse width of emission time was much wider than other moderators. Therefore, it will be concluded that the methane hydrate moderator does not have so good characteristics as a cold moderator and can give higher intensity at higher energy region.
    Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (B), HOKKAIDO UNIVERSITY, 14380229
  • イオン伝導体内Agの原子運動-中性子共鳴吸収分光法N-RASによる機能性材料評価
    科学研究費助成事業
    2000 - 2001
    加美山 隆
    中性子共鳴吸収分光法(N__-eutron R__-esonance A__-bsorption S__-pectroscopy, N-RAS)は、中性子共鳴吸収即発γ線分析法と飛行時間法を組み合わせた、我国の中性子実験グループにより提案・開発された全く新しい概念に基づく分光法である。本研究は、この新しい分光法でイオン伝導体中のAg原子の運動を追跡し、材料研究に対する本手法の有用性と応用性を明らかにする事を目的とした。平成13年度は、イオン伝導体中のAgについて測定を系統的に進めると共に、並行してこの実験手法の実験誤差要因について系統的に検討を行った。イオン伝導体としてはAgIの他、Ag3SI及びAg3Brを試料とし、キャリアイオンAgの運動状態と骨格を形成するIの運動状態について個別に情報を取り出し、相転移点を含む温度範囲で測定した。この結果、(1)骨格を形成するIの実効温度は、AgIとAg3SIの双方において各転移を含む測定温度領域の全体にわたって運動変化の傾向に変化は見られない、(2)キャリアであるAgイオンの運動は、Ag3SIやAg3SBrのγ→β転移のように骨格の変化を伴わないものではその傾向に変化は現れないが、骨格の変化を伴うAgIのβ→α転移ではAgイオンの運動に変化が現れる、ということがわかった。即ち、骨格を形成する陰イオンの作る環境がキャリアの運動に非常に大きく影響を及ぼすものと考えられる。また、N-RAS測定において問題となる誤差要因については、主としてスペクトルのフィッティングに影響を及ぼす原子の断面積の大きさについて検討した。この結果、試料を10%程度の吸収条件に調整すれば実効温度の誤差を0.5%程度に押さえられることがわかった。以上、本研究により、N-RASが実用材料の研究に応用が可能で有用な情報を与えること、試料に必要な調整条件を明らかにすることができた。
    日本学術振興会, 奨励研究(A), 北海道大学, 12750001
  • Collaboration on development of very high intensity pulsed neutron sources
    Grants-in-Aid for Scientific Research
    1999 - 2001
    KIYANAGI Yoshiaki, NARITA Hasakuni, HIRAGA Fujio, KAMIYAMA Takashi, WATANABE Noboru, FURUSAKA Michihiro
    High power spallation neutron sources with a power of MW class are now under construction in Japan and the USA, and in the Europe a higher power spallation neutron source with a power of 5 MW is now under planning. The neutron production part (target/moderator/reflector system : TMRS) of the facility is most important since it determines the performance of the facility. In this project, we studied the TMRS and got the results described below.
    We could introduce a new simulation code by collaborating with Los Alamos, and it has been a very powerful tool for optimization. We succeeded to increase effectively the intensity from a hydrogen moderator by introducing the heavy water pre-moderator. As a new type moderator we examined HD and CH3D moderators and got information about the neutron characteristics on the partially deuterated material.
    We measured the neutronic performance of LANSCE at Los Alamos, the second highest power spallation source in the world. We could check the validity of the simulation and get information on ortho-para transition at high radiation field.
    We have obtained very useful information on the design of the new spallation neutron sources in Japan, which is also useful for other future spallation sources.
    Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (B), Hokkaido University, 11694111
  • Irreversibility of Time - The Measurement of the Neutron Electric Dipole Moment by Cryogenic Ultracold Neutrons
    Grants-in-Aid for Scientific Research
    1998 - 2001
    YOSHIKI Hajime, EBISU Takeo
    In 1998, further works on the cryostat Mark 3001, which had been developed with the Grant-in-Aid for Scientific Research on Priority Area (Ultracold Neutrons) till 1996, have newly started. For a possible experimental site, ILL and PSI were investigated as the candidates. As the result, the collaboration with University of Sussex, the main research institute of edm measurement up till now, and RNL was launched. Two young researchers visited Japan in this period. The cooling of the superconducting solenoid has started from 1999/6, and the persisitent current mode has been achieved on 1999/7/25. It was confirmed that necessary magnetic field of 10 mG was generated in the superstable state. In the meantime, the collaboration with Sussex group was pushed forward. Consequently a joint proposal by Kure Univ. and Univ. of Sussex of an experiment "CryoEDM" was made on 1999/8/30 to the ILL steering committee. This proposal was officially approved by the organizing committee later in mid-October. In the meantime Mombusho executed an inspection of the scene on 1999/9/20 in Japan. From mid-December tests were carried out upon the cryostat (Cooling Tower II), and the liquid helium temperature attained a record breaking temperature, 0.48K, on 2000/2/4. On 2000/3/15 a confirmative document of the proposal made August of the previous year was sent to ILL. The committee allocated 40 days beam time to the project (11.22-12.7, 3.15-4.10). In order to comply with this developing situation, the whole members in the project, thirteen altogether have met at ILL. From the summer of 2000, shipping the experimental equipments began. The improved Cooling Tower I was completed on June 29, and together with other hundreds of pieces of equipment were sent from Japan on 2000/7/10. I went to Europe on 2000/8/ 7-21, 9/7-23 and 11/9-12/15 to help the construction of the beam H53 for PF1. In 2001/3, a great number of UCNs far more than expected for foreign researchers were produced, showing the high efficiency and the superiority of the superthermal method to the world. It was found however the beam intensity of H53 was 1/60 of the specification made by ILL. These results were published at an international UCN workshop held at Pushkin, Russia, in June. From January to March of 2002, UCN production rate vs incident cold neutron wavelength has been measured very accurately by inserting an elaborate velocity selector in the beam. This measurement showed that the multiphonon UCN production did exist but only about one tenth of the single phonon production rate. The saturated UCN density was 8/cm^3 with 0.7/cm^3/s production rate. Both are record breaking numbers (PhysLetterA308(03)p67) and with the advent of improved cold neutron beam the final UCN density will be 4000/cm^3, which will be good enough to reach even 10^-28 e.cm level in several years. The 10^-26 e.cm level we proposed as a target level at the outset of this project has been cleared by the Sussex group working at the normal temperatures (PRL82(1999 )904). Ebisu of Univ. of Kobe continued his studies on the detection of slow neutrons by means of superconducting granules (Sb) and made a progress confirming such detection mechanism as he had anticipated is taking place clearly by using a stronger neutron source. This result can be applied to further developments of detetors not only for neutrons but also for neutral particles such as dark matter.
    Japan Society for the Promotion of Science, Grant-in-Aid for Specially Promoted Research, Kure University, 10101001
  • Neutron beam transport by using a magnetic lens and multi-capilary fibers
    Grants-in-Aid for Scientific Research
    1999 - 2000
    KIYANAGI Yoshiaki, HIRAGA Fujio, KAMIYAMA Takashi, SAWAMURA Sadashi, KAWABATA Yuji, FURUSAKA Michihiro
    Narrow neutron beam with high intensity will open wide variety of neutron utilization fields. We studied two methods to focusing the neutoron beam. One is neutron mzgnetic lens by using 6 pole magnetic field, and the other is multi-capilary fiber.
    About magnetic lens, first we measured the neutron intensity through the lens and found that there exist factor 2 difference in focusing intensity between simulation and experiment. We tried to explain the reason of We found that there existed some distortion in the lens system due to strong force of high magnetic field and that this would cause gaps between magnet components. These gaps reduced the intensity. Succeedingly, we studied a function of the mfagnetic lens to forcus and pararell the neutron beasm, in which system two lenses are arranged in a series. For such a system we need neutron spin flipper to change orientation of the neutron spin between the two lenses. We observed the evidence of the neutron focusing and defocusing by using the spin flipper. This suggest the system works as neutron focusing and pararelling device.
    Second, we studied the wavelength dependence of neutron transmission through a multi-capirally fiber in order to know the effectiveness for utilization of white beam. A three dimensional simulation code was developed to analyze the transport characteristics. Transmission intensity depend on the radius of the capirally and also on the curvature of the fiber setting. The transmission of longer wavelength neutrons increases with the radius. Simulation indicated that the wavelength dependence of transmission could not be explained by ideal condition of the fiber and we needed to introduce distorsion in the fiber, such as waving. These data are very useful to make devices using multi-capiraly fiber.
    Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (B)., Hokkaido University, 11480119
  • Chemical structure and properties of disordered systems
    Grants-in-Aid for Scientific Research
    1998 - 1999
    NAKAMURA Yoshio, TAMURA Kozaburo, KAWAMURA Junichi, ITAMI Toshio, INUI Masanori, KAMIYAMA Takashi
    1). Mercury, a representative liquid metal, shows a metal-nonmetal transition in the supercritical region, and selenium, a representative liquid semiconductor, shows a transition from semiconductor to metal, and then to insulator. It is very important to investigate the relation between these physical properties and the atomic arrangement, density fluctuation or cluster formation in these materials. In the present study we have obtained some interesting results on the short-, medium-, and long-range structure of supercritical mercury and selenium, using the facilities of ESRF of Grenoble and Spring-8 of Nishiharima as strong X-ray sources.
    2). In superionic conductor glasses the dielectric relaxation associated with the glass transition cannot be observed due to large ionic conductivity. In the high frequency region, however, the contribution of ionic conduction is relatively small and it is expected to observe this dielectric relaxation. In this year, measurements of dielectric relaxation for AgI-AgィイD22ィエD2O-BィイD22ィエD2OィイD23ィエD2, AgI-AgPOィイD23ィエD2 have been made at the Bourgogne University up to the glass transition temperature over the frequency range from 1MHZ to 1GHz. From the results obtained we discuss quantitatively considering the concentration fluctuation of oxides and halides in the glasses. We have also made some preliminary measurements on bromine NMR in an aqueous solution of ZnBrィイD22ィエD2 over a temperature range from room temperature to above 100℃.
    3). The alkali metal-mercury alloy systems show interesting electronic properties such as minimum of thermoelectric power. It is strongly suggested that the medium range chemical order due to the charge transfer between the constituent atoms is related to these properties. In this year we have measured the X-ray absorption (EXAFS and XANES) for the liquid Rb-Hg system, at ESRF of Grenoble. The absorption at the L-edge for Hg and at the K-edge for Rb was measured as a function of alloy composition. From these results we have found that the change of the stucture around the Hg and Rb atoms is strongly correlated with the electronic properties of this system.
    Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (B)., HOKKAIDO UNIVERSITY, 10044045
  • 物質内Ag原子運動の選択的測定−中性子共鳴吸収分光法N−RASの材料研究への応用
    科学研究費助成事業
    1998 - 1998
    加美山 隆
    日本学術振興会, 奨励研究(A), 北海道大学, 10750473
  • Electrcal Properties of liquids and glasses composed of chemically different substances
    Grants-in-Aid for Scientific Research
    1995 - 1997
    NAKAMURA Yoshio, KAMIYAMA Takashi, KAWAMURA Junichi
    The results of the present project are summarized as follows :
    1.Metal-nonmetal systems : We have studied the electric conductivity and Cs-133 NMR in the Cs-ammonia-methylamine system and correlated the observed concentration flucutuation and the metal-nonmetal (MNM) transition of the system. Low field EPR measuremts at 200 MHz were carried out for the Na-ammonia system to show the local metallization prior to the bulk MNM transition. Precipitation of Ag and Bi nano-particles in borate glasses was investigated and the size dependence has been found for their physical properties such as plasmon absorption or melting temperature. The NM transition in the Tl-Ge-Te system has been correlated to the thermodynamic properties obtained from EMF measuremnts.
    2.Organic-inorganic mixed superionic conductors : The electrical conductivity of AgI-tetraalkylammonium iodide mixed glasses has been studied as a function of volume fraction of AgI,which shows a percolation transition from the superionic to insulator states. Microscopic investigations were also made with NMR,EXAFS,neutron and X-ray small angle scattering.
    3.Ionic salt-molecular liquid systems : The viscosity of the LiNO_3-glycerol system increases with salt concentration, while the electrical conductivity decreases. Similar measurements have been made for the LiCl-water system. Network structures composed of solvated lithium ions and solventmolecules have been suggtested.
    From these results it is concluded that in liquids and glasses composed of chemically different substances the local in homogeneities due to phase separation or complex formation determine electrical properities of the bulk systems.
    Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (B), HOKKAIDO UNIVERSITY, 07454143
  • Chemical bonds, structure and properties of fluids
    Grants-in-Aid for Scientific Research
    1995 - 1996
    NAKAMURA Yosio, SAKAGUCHI Yoshifumi, KAWAMURA Junichi, KAMIYAMA Takashi, INUI Masanori, TAMURA Kozaburo, DENIS Raoux, ROGER Argoud, YVONNE Soldo, JEAN-FRANCOIS Jal, JOSETTE Duppuy-Philon, OLIBIER Geaymond, PIERRE-OLIVIER Maurin, ETIENNE Pernot, JEAN-LOUIS Hazemann
    The main results of the present research project are summarized as follows.
    1) It is known that liquid Se sohws a semiconductor-metal transition on expansion above the liquid-gas critical point (1615ﾟC,385 bar). The Hiroshima group has carried out energy dispersive-X-ray diffraction, small angle X-ray diffraction, and XAFS experiments in order to investigate the mechanism of this transition from the change of atomic arrangements. They have succeeded in XAFS and XD measurements for the first time on liquid and supercritical Se, by use of intensive X-rays source of ESRF at Grenoble with cooperation of French scientists. It has been found that the two-fold coordinated structure still remains in the metallic region and that the bond length decreases at the semiconductor to metal transition. They proposed a model in which a planer zigzag structure of Se plays an important role in the metallization of the system.
    2) Concentrated aqueous solutions of LiC1 are very viscous and easily vitrified. In order to investigate dynamics of water molecules and ions, the Hokkaido group performed the neutron scattering and NMR (relaxation and diffusion coefficient) measurements with the French group from Lyon. In particular, they have succeeded to measure the diffusion coefficients and the NMR relaxation times of water in supercooled concentrated LiCl solutions. The results are compared with the results from Muon spectroscopy already obtained by the French group.
    3) While mutual visiting of Japanese and French scientists to perform the present research project were successfully achieved, we have tried to extend the project in future, by use of high pressure-high temperature NMR (Hokkaido University) and high pressure-high temperature XRD (Hiroshima University). The training of French young researchers in Sapporo and Hiroshima was very useful and promising for further development of each group participated in this project.
    Japan Society for the Promotion of Science, Grant-in-Aid for international Scientific Research, Hokkaido University, 07044047
  • 定トルク型回転粘度計の製作とそれによる低温溶融塩系の測定
    科学研究費助成事業
    1995 - 1995
    加美山 隆
    通常の共軸2重回転粘度測定法を改良し、内筒の回転によって試料にかかるトルクの大きさを、トルクをかけるモーターにフィードバックすることによって、非常に幅の広い粘度域を測定可能にし、且つ試料にかかるトルク型を低くする定トルク型の粘度計を作製して、実際にネットワーク構造を持つ液体系の測定に応用する研究を行った。
    定トルク型の粘度計は内筒を回転させるモーターと内筒の間を細いワイヤーで結び、ワイヤーのねじり強さを適当に変えることで試料に与えるトルクを決定するため、単一の装置で幅広い粘度領域の測定に対応できるようになった。ワイヤーのねじれ角度は光学式エンコーダーを用いて検出するので非常に高い精度で角度の検出が可能である。これにより測定される最少のねじれ角度を制御用計算機でステッピングモーターにフィードバックし、モーターをそのねじれ角度分回転させることにより、非常に低いトルクで粘度の測定が可能となった。
    本装置では、当初粘度標準液を幾つか測定して広い粘度範囲で装置のキャリブレーションを行った後、液体中において静電的な結合により比較的弱いネットワークを形成していると考えられるグリセロール-硝酸リチウム系の測定を行った。粘度標準液を使用した測定結果では、各温度において本装置の測定精度は±1%程度であった。グリセロール-硝酸リチウム系の測定では組成・温度を変化させて行った結果、この系がストロングガラス形成系とフラジャイルガラス形成系の中間に位置し、塩濃度を高めるとよりフラジャイルな性質を示すことが明らかとなった。
    日本学術振興会, 奨励研究(A), 北海道大学, 07750809
  • Condensed Matter Research using Intense Spallation Neutrons
    Grants-in-Aid for Scientific Research
    1992 - 1994
    IKEDA Hironobu, INABA A., STEIGENBERGER U., KAMIYAMA T., WATANABE N., FURUSAKA M., IKEDA S., MISAWA M., ASANO H., SHIBATA K., KOHGI M., YAMADA K., ENDOH Y., MATSUO T., ARAI M., KAKURAI K., KAJI K., KANAYA T., ITOH S.
    The Japan-UK Collaboration in Neutron Scattering is a consequence of an Agreement between the Japanese National Laboratory for High Energy Physics (KEK) and UK Science and Engineering Research Council (SERC) established in 1986 to promote scientific collaboration and interchange between Japanese and UK scientists in the field of pulsed neutron scattering It has resulted in the construction of the MARI spectrometer at the ISIS Facility and has given formal accsess to the scientific program at ISIS for Japanese scientists.
    The scientific achievements of the Japan-UK Collaboration in the year of 1994 are as follows.
    Highlights of the work in the area of high-Tc superconductors and related materials include the measurements on MARI of the dynamical structure factor S (Q,epsilon) of examples of the high-Tc cuprates, La_<1.85>Sr_<0.15>CuO_4. These experiments revealed anomalous high-energy magnetic fluctuations extending up to 300 meV which are quite different from YBa_2Cu_3O_7.
    Quantum effects on one-dimensional Heisenberg antiferromagnet with S=3/2, CsVCl_3, were investigated. Using MARI they were able to determine the full dispersion of the magnetic excitations, with zone boundary energies of 75 meV.One of the key results of these measurements is that there is nogap at the zone center as was found in the integer spin case.
    Hydrogen plays a fundamental role in the properties of many solid materials. Neutrons can gain information on its position in the structure and its dynamical behavior. Quantum theory is necessary to account for the latter, and enables the scattering intensity to be interpreted in terms of the potential well in which the hydrogen atom resides. This may be accomplished by measuring the shape of the hydrogen wave function. The role of the hydrogen bond in the ferroelectric phase transition was studied in KHCO_3, and the shape of the crystal potential was studied by measuring S (Q,epsilon).
    Japan Society for the Promotion of Science, Grant-in-Aid for international Scientific Research, National Laboratory for High Energy Physics, 04044160
  • アルカリリン酸塩融体内における網目構造形成過程に関する中性子非弾性散乱による研究
    科学研究費助成事業
    1993 - 1993
    加美山 隆
    本研究は、中性子準弾性散乱によりアルカリリン酸塩融体内のPO_4四面体の揺動運動を測定することでPO_4ネットワークの形成過程を調べることを目的としたものである。試料としてはNa_2OとP_2O_5の1:1の混合系を用いた。理想的にはこの混合比でリン酸塩ガラスはそのネットワークが分岐点を有しない1本のPO_4重合体からなるはずであり、溶融〜ガラス状態の変化においてどのような大きさのPO_4重合体からネットワークが形成されていくのか興味深い。
    試料はリン酸二水素アンモニウム(NH_4H_2PO_4)と炭酸ナトリウム(Na_2CO_3)の混合物を真空中で溶融・分解させて作成した。この試料は300℃以下でも固化せず非常に安定して過冷却する。作成試料は粉末にして、中性子非弾性散乱用円筒型石英セルに真空封入した。中性子散乱の測定には高エネルギー物理学研究所・ブ-スター利用施設中性子散乱実験室に設置されているLAM-40型中性子準弾性散乱分光器を使用した。この装置はエネルギー移行omega=-4〜10meV、弾性散乱位置において分解能が200mueVで運動量移行O=0.2〜2.5A^<-1>の範囲の動的構造因子S(O,omega)を測定することができる。試料の取り付けでは抵抗線加熱型真空炉内でアダプターを介して石英セルを支え、それにより試料の昇温を行った。実験の測定では真空炉の能力及びマシンタイムの都合上、融点上の600℃、過冷状態の400℃、ガラス状態り室温の3点のみで行い、さらに各温度に保持した石英セルのバックグランドと標準試料のバナジウムの測定も行った。測定データの処理は東北大学大型計算機センターで稼動中のプログラムを用いてバックグランド、カウンター効率、吸収、エネルギー窓幅等の補正を行い、試料の動的構造因子S(O,omega)を得た。
    その結果では、過冷状態と600℃の動的構造因子S(O,omega)のスペクトルの概形はガラス状態のそれとほぼ変わらず裾に分子内揺動運動モードを表す幅広い準弾性散乱スペクトルが見られない。このことはNa_2O-P_2O_5のリン酸塩ガラスでは融点より高い温度においてもPO_4四面体を骨格としたネットワークがほぼ完全に形成されていることを示している。一方、スペクトルの高さはガラス状態に向け温度が下がるほど高くなるという変化を示し、このガラスの融体はネットワーク鎖の揺動運動による流動性で特徴づけられているものと考えられる。
    日本学術振興会, 奨励研究(A), 北海道大学, 05750651
  • 中性子散乱に関する研究　　　　　　　　　　　　　　　
    Competitive research funding
  • 液体とガラスの動的構造に関する研究　　　　　　　　　　　　　　　
    Competitive research funding
  • Study of Neutron Scattering　　　　　　　　　　　　　　　
    Competitive research funding
  • Study on Dynamic Structures of Liquids and Glasses　　　　　　　　　　　　　　　
    Competitive research funding

Industrial Property Rights

  • 核反応検出装置及び方法並びにプログラム【時刻】　　　　　　　　　　　　　　　
    Patent right, 岩下秀徳, 舩津玄太郎, 古坂道弘, 加美山隆, 佐藤博隆, 鬼柳善明
    特願JP2020026274, 03 Jul. 2020
    特開WO2021002469, 07 Jan. 2021
    特表WO2021002469, 07 Jan. 2021
  • 核反応検出装置及び方法並びにプログラム【位置】　　　　　　　　　　　　　　　
    Patent right, 岩下秀徳, 舩津玄太郎, 古坂道弘, 加美山隆, 佐藤博隆, 鬼柳善明
    特願JP2020026279, 03 Jul. 2020
    特開WO2021002470, 07 Jan. 2021
    特表WO2021002470, 07 Jan. 2021
  • 診断装置、及び診断方法
    Patent right, 加美山 隆, 佐藤 博隆, 吉澤 章博, 三和田 靖彦, 石井 博行, 松本 清市, 国立大学法人北海道大学, トヨタ自動車株式会社
    特願2014-142069, 10 Jul. 2014
    特開2016-017901, 01 Feb. 2016
    特許第6306456号
    16 Mar. 2018
    201803018099880289
  • 診断装置、及び診断方法
    Patent right, 加美山 隆, 佐藤 博隆, 吉澤 章博, 三和田 靖彦, 石井 博行, 松本 清市, 国立大学法人北海道大学, トヨタ自動車株式会社
    特願2014-142069, 10 Jul. 2014
    特開2016-017901, 01 Feb. 2016
    201603010868948457

syllabus

  • 量子ビーム計測工学特論, 2024年, 修士課程, 工学院
  • 量子理工学特別講義, 2024年, 修士課程, 工学院
  • 医理工放射線物理学, 2024年, 修士課程, 医理工学院
  • 大学院共通授業科目（一般科目）：自然科学・応用科学, 2024年, 修士課程, 大学院共通科目
  • 大学院共通授業科目（一般科目）：自然科学・応用科学, 2024年, 修士課程, 大学院共通科目
  • 放射線物理学特論, 2024年, 修士課程, 工学院
  • 物質構造科学特論, 2024年, 修士課程, 工学院
  • 量子ビーム計測工学特論, 2024年, 博士後期課程, 工学院
  • 量子理工学特別講義, 2024年, 博士後期課程, 工学院
  • 放射線物理学特論, 2024年, 博士後期課程, 工学院
  • 物質構造科学特論, 2024年, 博士後期課程, 工学院
  • 統計力学, 2024年, 学士課程, 工学部
  • 化学Ⅰ, 2024年, 学士課程, 全学教育
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