Kakuyūgō kenkyū
Online ISSN : 1884-9571
Print ISSN : 0451-2375
ISSN-L : 0451-2375
Search
Advanced search
OR
Browse
Search
Volume 36, Issue 2
Displaying 1-2 of 2 articles from this issue
Show all abstracts
    • |<
    • <
    • 1
    • >
    • >|
  • A Equilibrium Magnetic Field for a Toroidal Plasma
    Masaharu Seki, Masafumi Kito, Ikuo Kaji, Toshihisa Honma
    1976 Volume 36 Issue 2 Pages 111-125
    Published: 1976
    Released on J-STAGE: March 04, 2011
    DOIhttps://doi.org/10.1585/jspf1958.36.111
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    In the toroidal coodinates, a equilibrium analysis is presented for a toroidally symmetrical, sharp boundary plasma. The plasma β and aspect ratio, Rp/rp, are assumed arbitrarily. In the equilibrium, the maximum plasma βp is evaluated as Max βp=1/4 (Rp/rp+rp/Rp) +1/2. When corrents flow on te plasmasurface and external conductors, a equilibrium magnetic iiela and the currents is analitically solved. In the case in which there exist the external conductors infinitely far from the plasma, a stagnation point and separatrix can be found near the plasma surface. Furthermore, the magnetic surfaces similar to the external conductors form can be found outside such the separatrix. The current density flowing on coils placed outside magnetic surfaces is much higer than that on inside them. The stagnation points exist inside and outside the coiles, or on the ones.
    View full abstract
    Download PDF (973K)
  • Ion Heating in An Ion-acoustic Turbulent Plasma
    Nobuo Yajima, Ken Kogiso
    1976 Volume 36 Issue 2 Pages 128-142
    Published: 1976
    Released on J-STAGE: March 04, 2011
    DOIhttps://doi.org/10.1585/jspf1958.36.128
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    A possibility of ion-heating by a coherent ion-acoustic wave is studied. Ions are accelerated periodically by the electrostatic potential of the ion-acoustic wave and their oscillation energy is converted into the thermal energy of ions through the collision with the neutral atoms in plasma. The Monte Carlo method applies to obtaining the heating-rate as the function of the quantities-the amplitude of electrostatic potential, the collision frequency and the mean-life of ions. The results agree with the experiment by Kawai et al., in which the ion-acoustic turbulence is excited due to the current-driven instability and is accompanied by the coherent wave with large wavelength. It is shown that the heating-rate is proportional to the amplitude of coherent wave.
    View full abstract
    Download PDF (1048K)
    • |<
    • <
    • 1
    • >
    • >|
feedback
 Top