Kakuyūgō kenkyū
Online ISSN : 1884-9571
Print ISSN : 0451-2375
ISSN-L : 0451-2375
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Volume 65, Issue 3
Displaying 1-7 of 7 articles from this issue
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  • Review of R&D of Intense Neutron Sources for Irradiation Studies of Fusion Reactor Materials
    Shiori Ishino
    1991 Volume 65 Issue 3 Pages 289-311
    Published: March 20, 1991
    Released on J-STAGE: October 22, 2010
    DOIhttps://doi.org/10.1585/jspf1958.65.289
    JOURNAL FREE ACCESS
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    Need for the intense neutron sources for the development of fusion materials has been recognized from the early stage of fusion development. A brief history including recent international collaborative activities is described.
    The most difficult problem in developing fusion materials is related to radiation damage produced during prolonged irradiation in a fusion energy system. Suitability to study this will define the requirements of the neutron source. Although there have been a number of proposals for the source, there seem to be no intense neutron sources satisfying all the suitability and feasibility requirements. Inherent problems and issues to be solved are summarized for various kinds of the sources. In particular, detailed integral descriptions on a d-Li stripping reaction source facility are given as a reference for considering the irradiation facility. It is emphasized that the intense neutron source facility for materials research is not merely an accelerator or a plasma machine but an integrated one composed of ion source, accelerator, target, irradiation cell, remote maintenance, shielding, hot laboratories and waste disposal.
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  • Engineering Design (Safety Aspect and Plant Design)
    Hiromasa Iida, Yasushi Seki, Hideyuki Takatsu, Hideo Hosobuchi, Eisuke ...
    1991 Volume 65 Issue 3 Pages 312-322
    Published: March 20, 1991
    Released on J-STAGE: October 22, 2010
    DOIhttps://doi.org/10.1585/jspf1958.65.312
    JOURNAL FREE ACCESS
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    Results of safety analyses and plant design conducted in the ITER Conceptual Design Phase are briefly reported. Safety analyses concluded that radiological doses from operational effluents and accidents are consistent with anticipated regulatory requirements. To improve safety further and meet the ambitious goal of “passive safety”, efforts are needed to reduce inventories of tritium and activation products. In the ITER plant design, no crucial problem is identified. The efforts in the Engineering Design Phase should be done for improving cost efficiency of the plant not jeopardizing safety features.
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  • ITER: Engineering Design (Nuclear Engineering)
    Hideyuki Takatsu, Toshimasa Kuroda, Hiroshi Yoshida, [in Japanese]
    1991 Volume 65 Issue 3 Pages 323-337
    Published: March 20, 1991
    Released on J-STAGE: October 22, 2010
    DOIhttps://doi.org/10.1585/jspf1958.65.323
    JOURNAL FREE ACCESS
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    An overview of nuclear engineering design conducted during ITER conceptual design activities (CDA) is briefly reported. It includes design developments for two in-vessel components-blanket and shield, as well as the tritium fuel cycle. A consistent design of these components has been produced through CDA, and it will be continued by more extensive Engineering Design Activities in the following five years.
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  • Atomic Processes in X-Ray Laser
    Yoshiaki Kato
    1991 Volume 65 Issue 3 Pages 338-345
    Published: March 20, 1991
    Released on J-STAGE: October 22, 2010
    DOIhttps://doi.org/10.1585/jspf1958.65.338
    JOURNAL FREE ACCESS
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    Recent topics on atomic processes in various pumping schem'es of X-ray lasers are reviewed. Several unresolved problems which are important in understanding kinetics of X-ray lasers are described. Relation of atomic processes with hydrodynamics are mentioned.
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  • Intensity Ratios of Spectral Lines for Plasma Diagnostics
    Takako Kato
    1991 Volume 65 Issue 3 Pages 346-357
    Published: March 20, 1991
    Released on J-STAGE: October 22, 2010
    DOIhttps://doi.org/10.1585/jspf1958.65.346
    JOURNAL FREE ACCESS
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    Temperature and density dependences of the intensity ratios of the spectral lines are discussed from the view point of the plasma diagnostics. The intensity ratios are mainly decided by the excitation process including metastable states. But the effect of recombination and ionization on the spectral lines are important especially in the case of non-equilibrium ionization.
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  • Polarization Phenomena of Atomic and Ionic Emissions in Plasma Spectroscopy
    Takashi Fujimoto
    1991 Volume 65 Issue 3 Pages 358-362
    Published: March 20, 1991
    Released on J-STAGE: October 22, 2010
    DOIhttps://doi.org/10.1585/jspf1958.65.358
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    Polarization plasma spectroscopy is a promising new area of plasma diagnostics. In this article, several atomic processes relevant to the polarization phenomena are discussed; production of alignment in excited atoms by photo-excitation, by electronic or atomic collisional excitaion, and relaxation of the alignment by collisions. Emphasis is placed on possible applications of the polarization phenomena in determining quantities pertinent to understanding of the plasma.
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  • [title in Japanese]
    [in Japanese]
    1991 Volume 65 Issue 3 Pages 363-366
    Published: March 20, 1991
    Released on J-STAGE: October 22, 2010
    DOIhttps://doi.org/10.1585/jspf1958.65.363
    JOURNAL FREE ACCESS
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