Kakuyūgō kenkyū
Online ISSN : 1884-9571
Print ISSN : 0451-2375
ISSN-L : 0451-2375
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Volume 51, Issue 3
Displaying 1-4 of 4 articles from this issue
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  • Fusion Fuel Handlings-Research Activities in Japan
    Kazutaka KAWAMURA
    1984 Volume 51 Issue 3 Pages 149-161
    Published: April 20, 1984
    Released on J-STAGE: March 04, 2011
    DOIhttps://doi.org/10.1585/jspf1958.51.149
    JOURNAL FREE ACCESS
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    After the tritium inventories of many proposed or exixting fusion test reactors have been surveyed, the behaviour of tritium in fusion environment and the proposed containment systems, in relation to the fusion reactor safety, are stressed. The values of permeabilities through stainless steel, niobium, poly-tetrafluoroethylene, polyethylene, polycarbonate and stainless steel covered with polycarbonate, which are obtained by japanese researcher, are summarized. Clearly the obtained results described here could be applicable to fusion reactor systems.
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  • Tokamak Plasma Confinement and Anomalous Transport
    Masahiro WAKATANI
    1984 Volume 51 Issue 3 Pages 163-186
    Published: April 20, 1984
    Released on J-STAGE: March 04, 2011
    DOIhttps://doi.org/10.1585/jspf1958.51.163
    JOURNAL FREE ACCESS
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    Confinement properties expected from the neoclassical theory are briefly discussed in § 2. Almost all transport coefficients do not agree with the neoclassical theory and they are called as anomalous transport. Recent scaling laws for tokamak plasma confinement are given in § 3. Several theoretical efforts to find the origin of the anomalous transport are picked up in § 4. Future problems are summarized in § 5.
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  • The Latest Ultrahigh Vacuum Technique-On Cryopump
    Kosuke Okamoto
    1984 Volume 51 Issue 3 Pages 187-209
    Published: April 20, 1984
    Released on J-STAGE: March 04, 2011
    DOIhttps://doi.org/10.1585/jspf1958.51.187
    JOURNAL FREE ACCESS
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    Cryopump is one type of storage pumps and offers truly contamination free vacuum. Commercial cryopumps which are cooled by refrigerator have made remarkable development in the last ten years and become practical industrial tool, for instance, in the field of semiconductor manufacture. Cryopumps which are cooled by liquid helium have been used to pump large amount of hydrogen gas in high energy neutral beam injector of large plasma devices and their applicability to pumping system of fusion reactor which exhausts mixtures of hydrogen isotopes and helium gases is now under study.
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  • Development of a Plasma Ion Analyzer
    Hideo Sugai, Hiroaki Kojima, Tadao Mori, Hirotaka Toyoda, Takayoshi Ok ...
    1984 Volume 51 Issue 3 Pages 221-240
    Published: April 20, 1984
    Released on J-STAGE: March 04, 2011
    DOIhttps://doi.org/10.1585/jspf1958.51.221
    JOURNAL FREE ACCESS
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    A Plasma ion analyzer for measuring mass, density and temperature of ions in a multi-ion species plasma has been developed. The analyzer is a simple and compact mass spectrometer where the magnetic field confining a plasma is used directly for the 180° magnetic deflection of accelerated ions. The numerical simulations of the analyzer characteristics provide the useful guiding principles for the data analysis as well as the optimum analyzer design. The test measurements of a two-ion species plasma has been made, and the results are in good agreement with the theoretical predictions and the spectroscopic measurements.
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