Kakuyūgō kenkyū
Online ISSN : 1884-9571
Print ISSN : 0451-2375
ISSN-L : 0451-2375
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Volume 52, Issue 5
Displaying 1-4 of 4 articles from this issue
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  • TEXTOR International Collaboration
    Akira Miyahara
    1984 Volume 52 Issue 5 Pages 391-400
    Published: December 20, 1984
    Released on J-STAGE: March 04, 2011
    DOIhttps://doi.org/10.1585/jspf1958.52.391
    JOURNAL FREE ACCESS
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    TEXTOR International Collaboration was organized in the framework of International Energy Agency, and started in 1978. The phase I collaboration was devoted to the machine construction, and the machine time for phase II work was decided according to the weight to their contributions. Japan was shared 20% machine time as. US and Swiss partners. As the phase II collaboration, ECR discharge cleaning and its effect on limiter conditioning is under going. International collaboration on ALT-II (Advanced Limiter Test-II) project is now proposing.
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  • X-Ray Spectroscopy on Tokamaks
    Shigeru Morita, Junji Fujita
    1984 Volume 52 Issue 5 Pages 401-426
    Published: December 20, 1984
    Released on J-STAGE: March 04, 2011
    DOIhttps://doi.org/10.1585/jspf1958.52.401
    JOURNAL FREE ACCESS
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    An introduction to the X-ray spectroscopy of tokamak plasmas using a crystal spectrometer is presented. The instrumentation is briefly discussed including Johann type, Hamos type, rotating and convex crystal spectrometers. A number of X-ray lines are measured for plasma diagnostic applications. These lead to the measurements of the ion temperature and the electron temperature and the determination of the charge-state distribution and the transport of high-Z impurity ions. Current topics on the X-ray spectroscopy of high-temperature plasmas besides tokamaks are also briefly described.
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  • A New Plasma Source “Plasma Emitter”
    Koichi Saeki, Satoru Iizuka, Noriyoshi Sato, Yoshisuke Hatta
    1984 Volume 52 Issue 5 Pages 427-441
    Published: December 20, 1984
    Released on J-STAGE: March 04, 2011
    DOIhttps://doi.org/10.1585/jspf1958.52.427
    JOURNAL FREE ACCESS
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    A new plasma source, the plasma emitter, was successfully developed by synthesizing alkali metal ions and electrons emitted from a heated mixture of aluminosilicate and barium oxide. The plasma density is in the range of 107-108 cm-3 and the electron and ion temperatures are approximately equal to the emitter temperature around 1300 K. Being very simple in its construction and operation, the plasma emitter has been widely applied for various types of plasma experiments.
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  • PLASMA POTENTIAL OF OHMICALLY HEATED TOKAMAK PLASMAS
    Tihiro Ohkawa
    1984 Volume 52 Issue 5 Pages 442-445
    Published: December 20, 1984
    Released on J-STAGE: March 04, 2011
    DOIhttps://doi.org/10.1585/jspf1958.52.442
    JOURNAL FREE ACCESS
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    The presence of neutral atoms in the tokamak plasma results in the negative plasma potential. The experimental results in ohmically heated plasmas can be explained by this model.
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