Kakuyūgō kenkyū
Online ISSN : 1884-9571
Print ISSN : 0451-2375
ISSN-L : 0451-2375
Search
Advanced search
OR
Browse
Search
Volume 20, Issue 4
Displaying 1-4 of 4 articles from this issue
Show all abstracts
    • |<
    • <
    • 1
    • >
    • >|
  • Theory of Vlagov Plasma Oscillations in a Magnetic Field
    Yoiti WATANABE
    1968 Volume 20 Issue 4 Pages 312-336
    Published: 1968
    Released on J-STAGE: March 04, 2011
    DOIhttps://doi.org/10.1585/jspf1958.20.312
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    The eigenvalue. thory of Vlasov Plasma Oscillations developed by Case andother autors, is applied to the case where the waves propagate obliquely to the direction of constant magnetic field, externally imposed on a spatially homogeneous plasma. The plasma may have a general equqilibrium distribution with certain few weak conditions. Many elliptically polarized high harmonic waves superpose in a transversal electric wave. This superposition, being impossible to he avoided by the choice of the condition, makes an anharmonic plasma oscillation, because of different phase velocities of partial waves. The spectra of the phase velocity are partly similar to those of velocity of density waves, and are derived from the dispersion equation. The spectra are, however, masked by other terms and disappear, when the direction of propagation becomes perpendicular to the direction of the external magnetic field; so also do the phenomena due to the spectrum like Landau dampings, microirstabilities and so on.
    View full abstract
    Download PDF (1773K)
  • Shear Stabilization of Non-Convective Drift Instabilities
    Kazuo Kitao
    1968 Volume 20 Issue 4 Pages 337-345
    Published: 1968
    Released on J-STAGE: March 04, 2011
    DOIhttps://doi.org/10.1585/jspf1958.20.337
    JOURNAL FREE ACCESS
    Download PDF (830K)
  • Generation of High Power Single Pulse Using a Nonlinear Resistor
    Izumi Hayashi, Yoshibumi Seno
    1968 Volume 20 Issue 4 Pages 348
    Published: 1968
    Released on J-STAGE: March 04, 2011
    DOIhttps://doi.org/10.1585/jspf1958.20.348
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    [in Japanese]
    View full abstract
    Download PDF (566K)
  • The Influence of the Magneto-active Plasma on Gyro-Synchrotron Emission Spectra in the Solar Atmosphere
    Kunitomo SAKURAI, Tadahiko OGAWA
    1968 Volume 20 Issue 4 Pages 355-381
    Published: 1968
    Released on J-STAGE: March 04, 2011
    DOIhttps://doi.org/10.1585/jspf1958.20.355
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    The influence of a magneto-active plasma on the gyrosynchrotron emission from an accelerated electron is considered in detail. This influence for the right-handed waves is much, compared with that for the left-handed waves. The radiated intensity of both the right-and left-handed waves is generally smaller than that in vacuum, but the former occasionally become much higher within some special frequency range compared with the latter.
    Solar radio type IV bursts are emitted due to the interaction of sunspot magnetic fields with energetic electrons Moving in the solar atmosphere. Accordingly, the influence ofsolar atmospheric plasmas on the bursts is examined. Some investigations are made of this influence on the emission of the bursts, based on the estimation of both the intensity of sunspot magnetic fields and the plasma density in the flare regions. The spectral pattern of type IV radio bursts is briefly considered.
    View full abstract
    Download PDF (2128K)
    • |<
    • <
    • 1
    • >
    • >|
feedback
 Top