Kakuyūgō kenkyū
Online ISSN : 1884-9571
Print ISSN : 0451-2375
ISSN-L : 0451-2375
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Volume 54, Issue 6
Displaying 1-6 of 6 articles from this issue
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  • RTNS-II and JAPAN-US Collaboration on its Utilization
    Kenji Sumita
    1985 Volume 54 Issue 6 Pages 608-623
    Published: December 20, 1985
    Released on J-STAGE: March 04, 2011
    DOIhttps://doi.org/10.1585/jspf1958.54.608
    JOURNAL FREE ACCESS
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    The world most intense D-T neutron source, RTNS- II have served for Japan-US collaboration since 1982 at LLNL, Ca, USA. Two neutron generators have been operated at the maximum neutron yield with 3×1013 n/s. Rather wide range items of the utilizations were selected mainly from the radiation damage studies on fusion materials, under 14 Me V D-T neutrons. Neutron dosimetry, Induced activities and Tritium technology etc were also included. Those experimental studies have been managed under the joint steering committee, and successfully supported by national research groups in several fields. Some typical research results introduced.
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  • Considerations on Fusion Systems Safety
    Yoichi Fuji-ie, Masana Nishikawa, Shoji Kotake
    1985 Volume 54 Issue 6 Pages 624-651
    Published: December 20, 1985
    Released on J-STAGE: March 04, 2011
    DOIhttps://doi.org/10.1585/jspf1958.54.624
    JOURNAL FREE ACCESS
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    Fusion systems should be developed so that they are safe enough to be acceptable to the societal environment and rational enough to the technical feasibility.
    For the fusion systems, even the concepts are premature and the system characteristics are different from the fission ones : Energy and RI sources are distributed in subsystems of the fusion systems, whereas these sources are concentrated on core regions in the others.
    We have developed the safety evaluation methodology, which can clarify safety features and give the preliminary guidelines to ensure the rational safety for the fusion systems.
    This paper describes : (1) the significance of safety study, (2) the role of safety evaluation in the development of fusion systems, (3) the development of safety study methodology and (4) the review of licensing procedure for the TFTR.
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  • Progress of Methods of Computer Simulation
    Yukimasa Takemoto, Yoshihiko Abe
    1985 Volume 54 Issue 6 Pages 652-663
    Published: December 20, 1985
    Released on J-STAGE: March 04, 2011
    DOIhttps://doi.org/10.1585/jspf1958.54.652
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    Computational studies of plasma physics and fusion theory require advanced techniques of simulation and numerical methods. These techniques are in progress in many fields of computational physics. As examples, the following topics are described;
    (1) multigrid (MG) techniques of high speed running which enhance the convergence rate of iterative numerical method for solving the discretized equations of Poisson type.
    (2) stable upwind finite-difference and control-volume schemes with the third order accuracy for solving the convection-diffusion equations.
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  • Present Status and Technical Problems of Superconducting Technology
    Takashi Satow, Toshitada Onishi
    1985 Volume 54 Issue 6 Pages 664-692
    Published: December 20, 1985
    Released on J-STAGE: March 04, 2011
    DOIhttps://doi.org/10.1585/jspf1958.54.664
    JOURNAL FREE ACCESS
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    Superconducting technology is the essential one for magnetic confinement fusion reactors. The present status and the technical problems of the superconducting technology in fusion research and other several main superconducting application fields are described in this report because the technology for fusion reactors has something in common with those in the other fields such as solid-state physics research, high energy physics research, magnetic levitation, superconducting power system, etc.
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  • Thermal Instability of a Thermonuclear Plasma in a DD Fusion Reactor I
    Takasi Kurasawa, Takenori Itoh, Yasuaki Yaguchi
    1985 Volume 54 Issue 6 Pages 693-700
    Published: December 20, 1985
    Released on J-STAGE: March 04, 2011
    DOIhttps://doi.org/10.1585/jspf1958.54.693
    JOURNAL FREE ACCESS
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    The growth rates of a thermal thermonuclear instability in a homogeneous deuterium plasma in a strong magnetic field are obtained analytically. The perturbation of the plasma temperature grows if the thickness of a plane plasma is greater than 1.2×106 (λ/10) 1/2/B cm, and the radius of a cylindrical plasma greater than 9.5×105 (λ/10) 1/2/B cm, where λ is the Coulomb logarithm and B (gauss) the strength of the magnetic field.
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  • Thermal Instability of a Thermonuclear Plasma in a DD Fusion Reactor II. Catalyzed DD Fusion Reactor
    Takasi Kurasawa, Takenori Itoh, Yasuaki Yaguchi
    1985 Volume 54 Issue 6 Pages 701-705
    Published: December 20, 1985
    Released on J-STAGE: March 04, 2011
    DOIhttps://doi.org/10.1585/jspf1958.54.701
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    The growth rates for a thermal thermonuclear instability of a homogeneous deuterium plasma in a strong magnetic field in a catalyzed DD fusion reactor are obtained analytically. The perturbation of the plasma temperature grows if the thickness of a plane plasma be greater than 8.9×105 (λ/10) 1/2/B cm, and the radius of a cylindrical plasma greater than 6.8×105 (λ/10) 1/2/B cm, where λ. is the Coulomb logarithm and B (gauss) the strength of the magnetic field.
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