Kakuyūgō kenkyū
Online ISSN : 1884-9571
Print ISSN : 0451-2375
ISSN-L : 0451-2375
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Volume 16, Issue 6
Displaying 1-3 of 3 articles from this issue
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  • Measurement of Shock Wave Plasma by Spectral Distribution of Scattered Laser Light (Thomson Scattering)
    Masahiro YOKOYAMA, Yasukazu IZAWA, Hideaki KABUTO, Chiyoe YAMANAKA
    1966 Volume 16 Issue 6 Pages 509-512
    Published: 1966
    Released on J-STAGE: March 04, 2011
    DOIhttps://doi.org/10.1585/jspf1958.16.509
    JOURNAL FREE ACCESS
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    When an intense laser light passes through a plasma, a small fraction of it is scattered by free electrons. Measurements of the intensity and the spectral distribution of the scattered light from the shocked plasma has been used to determine the electron density and the electron temperature behind the reflected shock waves. Rayleigh scattering signal from one atmospheric pressure air was used as.a measure to evaluate the magnitude of Thomson scattering signal from the shocked plasm, In our experiments the electron densities behind the reflected shock wave at initial pressure of Ar 1 mmHg were determined as. about 1016 cm-3, which were in good agreement with a calculated value by shock theory. By assuming a plasma parameter α=0.85, theoretical curve accords very well with the measured spectral distribution of the scattered light. In this case the electron, temperature behind the refledted shock wave at initial pressure of Ar 0.4 mmHg was 23, 000oK.
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  • Dipole Resonance of Cylindrical Plasma Columns in a MagnetoPlasma
    Takaya Kawabe
    1966 Volume 16 Issue 6 Pages 516-520
    Published: 1966
    Released on J-STAGE: March 04, 2011
    DOIhttps://doi.org/10.1585/jspf1958.16.516
    JOURNAL FREE ACCESS
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    Dipole resonance of cylindrical plasma column was considered in the case that it was inbedded in a plasma and external magnetic field was applied parallely to the axis of this column. They are treated quasi-statically and the wave number to the magnetic field kz was assumed to be very small and equal to zero. It is shown that the resonant frequency in the absence of external magnetic field increased as the density of external plasma increased. These results were compared.with an earlier experiment.
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  • Transient Phenomena of Screw Instability in a Positive Coumn in a Magnetic Field
    Shingo Imazu, Shotaro Naito, Hideaki Suzuki, Yoshiei Nakano
    1966 Volume 16 Issue 6 Pages 522-551
    Published: 1966
    Released on J-STAGE: March 04, 2011
    DOIhttps://doi.org/10.1585/jspf1958.16.522
    JOURNAL FREE ACCESS
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