Search Results - (Author, Cooperation:T. Imai)
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1Latest Papers from Table of Contents or Articles in PressA. Arsenault, S. K. Takahashi, T. Imai, W. He, Y. S. Lee, and M. Fujita
American Physical Society (APS)
Published 2018Staff ViewPublication Date: 2018-02-15Publisher: American Physical Society (APS)Print ISSN: 1098-0121Electronic ISSN: 1095-3795Topics: PhysicsKeywords: Superfluidity and superconductivityPublished by: -
2Latest Papers from Table of Contents or Articles in PressStaff View
Publication Date: 2018-03-15Publisher: American Physical Society (APS)Print ISSN: 1098-0121Electronic ISSN: 1095-3795Topics: PhysicsKeywords: Superfluidity and superconductivityPublished by: -
3Latest Papers from Table of Contents or Articles in PressC. F. Camerer ; A. Dreber ; E. Forsell ; T. H. Ho ; J. Huber ; M. Johannesson ; M. Kirchler ; J. Almenberg ; A. Altmejd ; T. Chan ; E. Heikensten ; F. Holzmeister ; T. Imai ; S. Isaksson ; G. Nave ; T. Pfeiffer ; M. Razen ; H. Wu
American Association for the Advancement of Science (AAAS)
Published 2016Staff ViewPublication Date: 2016-03-05Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyComputer ScienceMedicineNatural Sciences in GeneralPhysicsPublished by: -
4Latest Papers from Table of Contents or Articles in PressM. Fu ; T. Imai ; T. H. Han ; Y. S. Lee
American Association for the Advancement of Science (AAAS)
Published 2015Staff ViewPublication Date: 2015-11-07Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyComputer ScienceMedicineNatural Sciences in GeneralPhysicsPublished by: -
5Latest Papers from Table of Contents or Articles in PressS. K. Takahashi, A. Arsenault, C. Mauws, A. M. Hallas, C. Sarkis, K. A. Ross, C. R. Wiebe, M. Tachibana, G. M. Luke, and T. Imai
American Physical Society (APS)
Published 2018Staff ViewPublication Date: 2018-09-25Publisher: American Physical Society (APS)Print ISSN: 1098-0121Electronic ISSN: 1095-3795Topics: PhysicsKeywords: MagnetismPublished by: -
6Articles: DFG German National LicensesKasugai, A. ; Sakamoto, K. ; Takahashi, K. ; Tsuneoka, M. ; Kariya, T. ; Imai, T.
[S.l.] : American Institute of Physics (AIP)
Published 1998Staff ViewISSN: 1089-7623Source: AIP Digital ArchiveTopics: PhysicsElectrical Engineering, Measurement and Control TechnologyNotes: To satisfy the electrical and thermomechanical requirements for a continuous wave millimeter wave beam transmission, a window assembly using a large size synthesized diamond disk has been developed. Such window systems are needed as a vacuum barrier and tritium shielding in future electron cyclotron heating systems for fusion plasma heating and noninductive electron cyclotron current drive. The diamond used in this study was manufactured by chemical vapor deposition (CVD) and consists of a polycrystalline diamond disk 96 mm in diameter and 2.23 mm thick. The disk was built into an assembly in which two Inconel tubes were bonded on both sides of the plate to provide vacuum shielding and water cooling to the edge of the disk, leaving an effective window aperture of 83 mm. It will be shown that, as a result of the high thermal conductivity and low dielectric loss exhibited by this grade of CVD diamond, the temperature increase of the window due to the absorption of high-power millimeter wave radiation could be minimized by simple water edge cooling at room temperature. During transmission of a focused Gaussian beam of 170 GHz, 110 kW, 10 s, the temperature increase at the center of the window reached a steady state condition at a value of approximately 40 K, in good agreement with calculated values. Water-edge-cooled CVD diamond windows promise to provide a practical technical solution for the transmission of continuous millimeter wave transmission in excess of 1 MW. © 1998 American Institute of Physics.Type of Medium: Electronic ResourceURL: -
7Articles: DFG German National LicensesFuke, S. ; Ogawa, K. ; Kuwahara, K. ; Imai, T.
[S.l.] : American Institute of Physics (AIP)
Published 1987Staff ViewISSN: 1089-7550Source: AIP Digital ArchiveTopics: PhysicsNotes: Single-crystal layers of ZnSe have been grown on GaP and GaAs substrates in a hydrogen transport system. By the use of the H2 bypass flow, the growth rate versus substrate temperature characteristics are found to be modified. The growth on GaP (111)B substrates is limited by thermodynamic mass transport and that on GaP (100) substrates by the kinetics of the surface chemical reaction. ZnSe layers grown on the GaAs (100) face have larger growth rates and smoother surface morphologies than those on GaP (100). This result may originate from the lattice parameter mismatch between the epitaxial layers and the substrates.Type of Medium: Electronic ResourceURL: -
8Articles: DFG German National LicensesFuke, S. ; Araki, H. ; Kuwahara, K. ; Imai, T.
[S.l.] : American Institute of Physics (AIP)
Published 1986Staff ViewISSN: 1089-7550Source: AIP Digital ArchiveTopics: PhysicsNotes: Single-crystal layers of ZnS have been grown on GaP substrates in a hydrogen transport system. By the addition of In to the reactant agents, the orientation dependence of the growth rates of ZnS are reversed for (111)A and (111)B substrates. The improvement of crystallinity of the grown layers can be seen by the surface morphology observation and x-ray and reflection high-energy electron diffraction analyses. These phenomena are undoubtedly caused by the In-incorporation effects during the epitaxial growth of ZnS.Type of Medium: Electronic ResourceURL: -
9Articles: DFG German National LicensesFuke, S. ; Kawarabayashi, S. ; Kuwahara, K. ; Imai, T.
[S.l.] : American Institute of Physics (AIP)
Published 1986Staff ViewISSN: 1089-7550Source: AIP Digital ArchiveTopics: PhysicsNotes: Zinc phosphide (Zn3P2) thin films have been deposited by hot-wall deposition technique on glass substrate, and the deposition behaviors as well as structural properties of deposited films are studied. The source temperature and the temperature difference between source and substrate mainly affect the growth rate. Scanning electron microscope observation indicates the growth of columnar structure perpendicular to the substrate, and highly oriented thin films along the c axis are confirmed by x-ray diffraction analyses. The resistivity of the films is strongly related to the phosphorus composition X in Zn(1−X)PX, and the films having higher X show lower resistivity. The direct absorption edge is obtained as about 1.5 eV from the optical absorption data.Type of Medium: Electronic ResourceURL: -
10Articles: DFG German National LicensesTakahashi, K. ; Sakamoto, K. ; Kasugai, A. ; Imai, T.
[S.l.] : American Institute of Physics (AIP)
Published 2000Staff ViewISSN: 1089-7623Source: AIP Digital ArchiveTopics: PhysicsElectrical Engineering, Measurement and Control TechnologyNotes: A pressure resistant polycrystalline chemical vapor deposition (CVD) diamond disk for a microwave window is used for a vacuum and a tritium confinement boundary in fusion applications. A pressure test of a CVD diamond window disk (2.25 mm in thickness and 100 mm in diameter) was carried out. It was demonstrated that the diamond window tolerated 1.0 MPa (10 atm) in the plenum. The displacement of the window center for both the growth and the nucleation side on the unpressurized side is 40±1 and 41±1 μm, respectively, at the pressure of 1.0 MPa, and these values agree well with those calculated. No damage in the disk and the braze, and no vacuum leakage in the assembly was observed. This result demonstrates that the diamond window assembly could tolerate up to 1.45 MPa. It was experimentally proved that the diamond window satisfied the safety requirement of 0.5 MPa resistance for the vacuum and the tritium confinement boundary of an International Thermonuclear Experimental Reactor. The design prospect for the diamond window of the electron cyclotron heating and current drive system is also discussed, based on the stress analysis using the ABAQUS code. © 2000 American Institute of Physics.Type of Medium: Electronic ResourceURL: -
11Articles: DFG German National LicensesWatanabe, K. ; Amemiya, T. ; Hanada, M. ; Iga, T. ; Imai, T. ; Inoue, T. ; Kashiwagi, M. ; Kuriyama, M. ; Morishita, T. ; Okumura, Y. ; Takayanagi, T. ; Yamamoto, T.
[S.l.] : American Institute of Physics (AIP)
Published 2002Staff ViewISSN: 1089-7623Source: AIP Digital ArchiveTopics: PhysicsElectrical Engineering, Measurement and Control TechnologyNotes: Development of the negative-ion sources has been conducted to realize a high power neutral beam injector for International Thermonuclear Experimental Reactor (ITER). A high negative-ion current density of 31 mA/cm2 (H−) at a very low pressure of 0.1 Pa has been produced in a cesium seeded multicusp plasma generator which has the same concept of the ITER source. For a vacuum insulated accelerator, a voltage holding experiment of long distance vacuum gaps up to ∼1.8 m has been performed. It was clarified that the transition region of product pressure distance (pd) from the vacuum breakdown to the gas discharge is about 0.2 Pa m which is high enough from the operating region of the ITER source. A prototype vacuum insulated accelerator was fabricated based on the experiment and tested. A high-energy H− beam acceleration up to 970 keV, 37 mA, and 1 s has been successfully demonstrated. © 2002 American Institute of Physics.Type of Medium: Electronic ResourceURL: -
12Articles: DFG German National LicensesStaff View
ISSN: 1750-3841Source: Blackwell Publishing Journal Backfiles 1879-2005Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, NutritionProcess Engineering, Biotechnology, Nutrition TechnologyNotes: The sorption of organic volatiles from orange juice by polymeric food contact materials was investigated. Three sealant films were evaluated, a commercial low density polyethylene and two developmental films, an ethylene vinyl alcohol copolymer of high ethylene content and a co-polyester. Samples of the films were immersed in the juice for 24 days at 22°C and the level of sorbed volatiles monitored as a function of time. Three probe compounds (d-limonene, neral and geranial) were selected as being representative of orange juice flavor components. A gas chromatographic technique was developed to quantify the level of probe compounds in juice and films. Results compared favorably to the more traditional bromide-bromate titration method. Sorption of organic volatiles by one of the developmental films (co-polyester) was significantly lower than the others.Type of Medium: Electronic ResourceURL: -
13Articles: DFG German National LicensesStaff View
ISSN: 1750-3841Source: Blackwell Publishing Journal Backfiles 1879-2005Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, NutritionProcess Engineering, Biotechnology, Nutrition TechnologyNotes: Adsorption characteristics of methyl orange were investigated on kudzu, sweet potato, corn, rice, wheat, potato and snake gourd starches. No adsorption of methyl orange, an anionic dye, was observed on potato starch and snake gourd starch because of the presence of phosphate esters. Adsorption isotherms were found to fit both the Langmuir equation and Freundlich equation in all others. The degree of adsorption by kudzu, sweet potato, corn and wheat starches was related to the number of hydroxyl groups. We suggested methyl orange was confined to a monolayer on surface hydroxyl groups of the starches.Type of Medium: Electronic ResourceURL: -
14Articles: DFG German National LicensesStaff View
ISSN: 0003-2697Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: BiologyChemistry and PharmacologyType of Medium: Electronic ResourceURL: -
15Articles: DFG German National LicensesStaff View
ISSN: 0309-1740Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, NutritionProcess Engineering, Biotechnology, Nutrition TechnologyType of Medium: Electronic ResourceURL: -
16Articles: DFG German National LicensesJames, M.R. ; Richard, C.W. ; Schott, J.-J. ; Yousry, C. ; Clark, K. ; Bell, J. ; Terwilliger, J.D. ; Kazan, J. ; Dubay, C. ; Vignal, A. ; Agrapart, M. ; Imai, T. ; Nakamura, Y. ; Polymeropoulos, M. ; Weissenbach, J. ; Cox, D.R. ; Lathrop, G.M.
[s.l.] : Nature Publishing Group
Published 1994Staff ViewISSN: 1546-1718Source: Nature Archives 1869 - 2009Topics: BiologyMedicineNotes: [Auszug] We present a high resolution radiation hybrid map of human chromosome 11 using 506 sequence tagged sites (STSs) scored on a panel of 86 radiation hybrids. The 506 STSs fall into 299 unique positions (average resolution of about 480 kilobases (kb)) that span the whole chromosome. A subset of 260 ...Type of Medium: Electronic ResourceURL: -
17Articles: DFG German National LicensesStaff View
ISSN: 0304-8853Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: PhysicsType of Medium: Electronic ResourceURL: -
18Articles: DFG German National LicensesStaff View
ISSN: 0003-9861Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: BiologyChemistry and PharmacologyPhysicsType of Medium: Electronic ResourceURL: -
19Articles: DFG German National LicensesStaff View
ISSN: 0003-9861Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: BiologyChemistry and PharmacologyPhysicsType of Medium: Electronic ResourceURL: -
20Articles: DFG German National LicensesStaff View
ISSN: 0006-291XSource: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: BiologyChemistry and PharmacologyPhysicsType of Medium: Electronic ResourceURL: