Kakuyūgō kenkyū
Online ISSN : 1884-9571
Print ISSN : 0451-2375
ISSN-L : 0451-2375
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Volume 5, Issue 4
Displaying 1-7 of 7 articles from this issue
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  • Hollow Cathode Discharge
    S. Yoshikawa
    1960 Volume 5 Issue 4 Pages 379-382
    Published: 1960
    Released on J-STAGE: March 23, 2011
    DOIhttps://doi.org/10.1585/jspf1958.5.379
    JOURNAL FREE ACCESS
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  • The Penetration of microwaves through Plasmas
    Y. Midzuno
    1960 Volume 5 Issue 4 Pages 389-395
    Published: 1960
    Released on J-STAGE: March 23, 2011
    DOIhttps://doi.org/10.1585/jspf1958.5.389
    JOURNAL FREE ACCESS
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    The penetration of microwaves through a plasma slab is considered, and some discussions are given for the validity of the convensional formulae for the phase shift. We also give a formula for the microwaves scattered by a plasma cylinder in the Born approximation with some related considerations.
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  • Behavior of Plasmas in a Magnetic Cylinder
    M. Sato, T. Uchida, S. Hamada
    1960 Volume 5 Issue 4 Pages 396-406
    Published: 1960
    Released on J-STAGE: March 23, 2011
    DOIhttps://doi.org/10.1585/jspf1958.5.396
    JOURNAL FREE ACCESS
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    The behavior of plasmas in a magnetic cylinder without mirror is examined and plotted on the T-n diagram where T is the temperature and n is the number density. Change of external magnetic pressure and end loss are taken into consideration. Other complicated phenomena are neglected. The plasma is classified into the fluid like and the particle like plasma according to whether the ion collision time is smaller or greater than the escaping time of ions. There are notable differences between then. In case of the fluid like plasma, path of the plasma on T-n diagram is decided independent of the way of changing the external magnetic pressure and the total number of ions decreases exponentially. In case of the particle like plasma, path of the plasma on plasma on T-n diagram dependson the way of changing the external magnetic pressure the total number of ions decreases as t-1 and the velocity distribution becomes inhomogeneous. The kinetic temperature of particle like plasma intends to become higher than the initial value even when the external magnetic pressure is kept at constant value.
    This phenomenon can not occur in case of fluid like plasma.
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  • The Method of Continuous Observation of Line Profile by High Speed Camera and Photomultiplier
    S. Hamada, M. Yokota, T. Uchida, H. Yoshimura
    1960 Volume 5 Issue 4 Pages 407-414
    Published: 1960
    Released on J-STAGE: March 23, 2011
    DOIhttps://doi.org/10.1585/jspf1958.5.407
    JOURNAL FREE ACCESS
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    The idea and principle of the method is described and discussed. The image is not swept along an arclike film surface as in usual high speed cameras, but is scanned repeatedly at one place. The plane mirrors are arranged tangentially on an elliptical surface. The exit slit and the rotating mirror are set in the position of the foci of this ellipse. Thus the image of the line profile is scanned at the slit each time the light beam sweeps across one of the plane mirrors. However, the image plane rotates with the rotating mirror, so a narrow width slit is not suitable for this instrument. Therefore, one knife edge of the exit slit is fixed in the focussing plane and the slit width made greater than the length of the image so that the signal from the photomultiplier is independent of the rotation of the image plane. The signal will indicate the integrated light intensity of the image. The output signal from the photomultiplier is fed to the differential circuits. Thus the signal through this circuit indicates the real line profile.
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  • The Measurement of Electron Cyclotron Radiation of Plasma
    Kenji Mitani, Hiroshi Kubo, Akio Nishio
    1960 Volume 5 Issue 4 Pages 415-432
    Published: 1960
    Released on J-STAGE: August 16, 2011
    DOIhttps://doi.org/10.1585/jspf1958.5.415
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    We measured the energy distribution of the electron cyclotron resonance at 10 kMc microwave.We found that the resonance points shifted to the more intensive magnetic field than the one determined by ωb/ω=1 as the discharging current increased and also the half-width became the more broad. The effective collision frequencies were calculated by applylng the Oster's theory to our experimental results and furthermore these values were compared with ones obtained by microwave absorption and probe measurements. And we concluded that the cyclotron. radiation in the transparent plasma was took place under the effects of electron-ion and electron-electron collisions besides electron-molecule collision.
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  • Erratum to : Cerenkov Radiation in a Plasma.II
    1960 Volume 5 Issue 4 Pages 468
    Published: 1960
    Released on J-STAGE: March 23, 2011
    DOIhttps://doi.org/10.1585/jspf1958.5.4_468
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  • Erratum to : Cerenkov Radiation in a Plasma
    1960 Volume 5 Issue 4 Pages 469
    Published: 1960
    Released on J-STAGE: March 23, 2011
    DOIhttps://doi.org/10.1585/jspf1958.5.4_469
    JOURNAL FREE ACCESS
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