Kakuyūgō kenkyū
Online ISSN : 1884-9571
Print ISSN : 0451-2375
ISSN-L : 0451-2375
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Volume 34, Issue 6
Displaying 1-3 of 3 articles from this issue
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  • Interaction of TEA CO2 Laser Light with Laser Produced Plasma
    Masahiro YOKOYAMA, Chobei YAMABE, Eiji SETOYAMA, Aye THEIN, Chiyoe YAM ...
    1975 Volume 34 Issue 6 Pages 568-577
    Published: 1975
    Released on J-STAGE: March 04, 2011
    DOIhttps://doi.org/10.1585/jspf1958.34.568
    JOURNAL FREE ACCESS
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  • Control of Electron Temperature of a Plasma in Double-Plasma Device
    Tadao HONZAWA
    1975 Volume 34 Issue 6 Pages 578-589
    Published: 1975
    Released on J-STAGE: March 04, 2011
    DOIhttps://doi.org/10.1585/jspf1958.34.578
    JOURNAL FREE ACCESS
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    A method is described for controlling the electrontemperature of a plasma (target-plasma) in a double-plasma device by adjusting the thermoelectronic emission from heaters used in the target-plasma region. When the emission is too small to produce a plasma through ionization, but it is large enough to neutralize an ion-cloud, we can obtain a plasma with electron-temperature as low as 0.1 eV or lower. However, when the emission is made large enough for ionization to occur, a plasma with relatively hot electron-temperature above 1 eV can be easily produced. Under an intermediate condition the value of measured electron-temperature can be changed from 0.05 to 1.3 eV depending upon the voltage applied to the heaters. The mechanism of the production of such a low electrontemperature plasma is also explained in detail.
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  • Experiments on Parametric Instability of Lower Hybrid Mode
    K. Matsumoto, S. Takamura, T. Okuda
    1975 Volume 34 Issue 6 Pages 590-606
    Published: 1975
    Released on J-STAGE: March 04, 2011
    DOIhttps://doi.org/10.1585/jspf1958.34.590
    JOURNAL FREE ACCESS
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    Near the lower hybrid frequency a h.f. electric field was applied, to an argon plasma in a glass tube, . pèrpendicularly to longitudinal magnetic field.
    At certain value of the electric field the low and high frequency oscillations were excited. The matching conditions for frequency and wave number, were confirmed. The low frequency oscillation was identified to be the electro-static ion cyclotron wave (cyclotron sound), and the connection of plasma heating with the parametric instability was examined.
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