Kakuyūgō kenkyū
Online ISSN : 1884-9571
Print ISSN : 0451-2375
ISSN-L : 0451-2375
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Volume 16, Issue 3
Displaying 1-4 of 4 articles from this issue
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  • Magnetic Probe Measurement of Slow θ Pinch Plasma
    Yasuyuki Nogi
    1966 Volume 16 Issue 3 Pages 155-168
    Published: 1966
    Released on J-STAGE: March 04, 2011
    DOIhttps://doi.org/10.1585/jspf1958.16.155
    JOURNAL FREE ACCESS
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  • A MACROSCOPIC TREATMENT OF ION SHEATH IN MAGNETIC FIELD
    Utaro Furukane, Toshiatsu Oda
    1966 Volume 16 Issue 3 Pages 169-182
    Published: 1966
    Released on J-STAGE: March 04, 2011
    DOIhttps://doi.org/10.1585/jspf1958.16.169
    JOURNAL FREE ACCESS
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    The macroscopic equations without collision term are employed to get a solution of the ion sheath of the plasma with macroscopic flow in the magnetic field. It has been shown that the kinetic energy of the ions arriving the sheath decreases with the increase of the magnetic field, and it is kTe/2 in the case of no Magnetic field.
    Numerical computations are performed of the structure of the sheath for helium. plasma with the ambipolar diffusion. It has been also revealed that the static potential varies parabolically in the sheath as at the case of no applied magnetic field.
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  • On the Nonlinear Kinetics in A Weakly Turbulent Plasma
    K. Nishikawa
    1966 Volume 16 Issue 3 Pages 189-197
    Published: 1966
    Released on J-STAGE: March 04, 2011
    DOIhttps://doi.org/10.1585/jspf1958.16.189
    JOURNAL FREE ACCESS
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    The nonlipear kinetics of waves in a weakly turbulent classical plasma is investigated from a quantum mecnanical viewpoint. It is shown that the lowest order nonlinear effects in the long wave length region arise not only from the Compton scattering of plasmons by electrons, which is the only process previously considered, but also from the absorption and emission of plasmons accompanied by a collision between two electrons. The latter has an effect to smooth out the spectral distribution of the waves, while the former (the Compton scattering, process) exhibits two distinct effects depending on the magnitude of the total wave energy E; for E smaller than a certain critical value EC the Compton scattering process smooths out the wave distribution, while for E greater than EC the wave energy is directed towards the longest wave length region. The value of EC is roughly estimated to be four times the thermal level.
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  • Microwave Reflection Measurement of Extremely High Electron Densities of Plasmas Produced by Shock Waves
    Susumu Takeda, Akimasa Funahashi
    1966 Volume 16 Issue 3 Pages 198-201
    Published: 1966
    Released on J-STAGE: March 04, 2011
    DOIhttps://doi.org/10.1585/jspf1958.16.198
    JOURNAL FREE ACCESS
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    The electron density from 1014 to 1015 cm-3 is bard to be measured by any method. Here the electron densities from 1013 up to 1017 cm-3 of plasmas produced by electromagnetically driven shock waves of Mach no. 10-25 in argon and air at a pressure of 1.OmmHg are measured by a 35GC microwave reflection probe1 which is perpendicularly inserted into the shock tube. The measured values fairly agree with theoretically calculated ones except in low. Mach. no.
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