Kakuyūgō kenkyū
Online ISSN : 1884-9571
Print ISSN : 0451-2375
ISSN-L : 0451-2375
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Volume 27, Issue 6
Displaying 1-3 of 3 articles from this issue
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  • Plasma Generation and Heating to Thermonuclear Temperature by Lasers
    Hyung-Boo Kang, Motoichiro Waki, Kunio Yoshida, Tatsuhiko Yamanaka, Ch ...
    1972 Volume 27 Issue 6 Pages 358-377
    Published: 1972
    Released on J-STAGE: March 04, 2011
    DOIhttps://doi.org/10.1585/jspf1958.27.358
    JOURNAL FREE ACCESS
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    As lasers have ability to deliver a large amount of energy very rapidly to matters, one can produce thermonuclear temperature plasma. We observed that neutron yield from a solid deuterium target irradiated by the beam of glass laser, the power of which was 20 GW at 2 ns.
    The estimated threshold of laser power for anomalous heating due to parametric instability was accord with the experimental result. Beyond this threshold, the increase of the electron temperature; the appearance of a fast ion group and the anomality of the light reflection from plasma were discovered. These phenomena were closely correlated with the neutron yield. At the high temperature region above a few hundred electron volts, this kind of anomalous heating has an essential role to reach the fusion reaction temperature.
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  • “ECRH Plasma and R.F. Power Absorption of a Plasma Produced by a Coaxial Plasma Gun”
    Masataka Masuda, Yuji Tanaka, Takayoshi Okuda
    1972 Volume 27 Issue 6 Pages 378-389
    Published: 1972
    Released on J-STAGE: March 04, 2011
    DOIhttps://doi.org/10.1585/jspf1958.27.378
    JOURNAL FREE ACCESS
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    The ECRH heating is investigated by two ways. A plasma produced by a ECRH plasma source has two components of different electron temperatures. The R.F. heating of a plasma produced by a coaxial plasma gun is also studied. For the latter case, the resonance absorptions at ω =ωce and ω=ωce/2 are observed, where ωce is the electron cyclotron frequency. In the frequency range wher ω<ωce /2, the non-resonant absorption occurs. This may be attributed to the Whistler wave mode.
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  • Production of microwave plasma by means of Lisitanos-slotted-coil
    Ousuke Saka
    1972 Volume 27 Issue 6 Pages 390-401
    Published: 1972
    Released on J-STAGE: March 04, 2011
    DOIhttps://doi.org/10.1585/jspf1958.27.390
    JOURNAL FREE ACCESS
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    The Mechanism of production of E.C.R plasma_by means of the Lisitanos-Slotted-Coil and the plasma parameters were investigated. It was-found that.the intensity of the electric field outside the slotted coil was quite small as compared to that of the inside.
    The electron density and temperature could be changed from 1010/cc to 1012/cc and from 2 ev to 10 eV by controlling the discharge parameters. It was found that if the resonant point was on the slotted coil, the radial density profile was nearly flat.
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