Kakuyūgō kenkyū
Online ISSN : 1884-9571
Print ISSN : 0451-2375
ISSN-L : 0451-2375
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Volume 22, Issue 4
Displaying 1-5 of 5 articles from this issue
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  • Loss Cone Instability in an External High Frequency Electric Field
    Shun'ichi KISHIMOTO, Hideo AKIMUNE, Tokuo SUITA
    1969 Volume 22 Issue 4 Pages 200-216
    Published: 1969
    Released on J-STAGE: March 04, 2011
    DOIhttps://doi.org/10.1585/jspf1958.22.200
    JOURNAL FREE ACCESS
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    Loss Cone Instability in an external high frequency electric field is investigated theoretically and the dispersion relation is derived by the Alley and Silin method. It is proved that Loss Cone Instability at the frequency near nωci can be stabilized by the external high frequency electric field, if the fequency of the applied electric field is off-resonant from the ion cyclotron frequency and its harmonics, where n is the harmonic number and ωci is the ion cyclotron frequency. A new growing wave near l ωo + nωci may exist, where l is the wave can also be stabilized to a certain degree by the stronger electric field. These results are consistent with the experimental results of PHOENIX and HX qualitatively.
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  • Energy Analysis of Energetic Neutral Particles
    Shun'ichi KISIMOTO, Hideo AKIMUNE, Tokuo SUITA, Kenji MORITA, Yoichi M ...
    1969 Volume 22 Issue 4 Pages 217-229
    Published: 1969
    Released on J-STAGE: March 04, 2011
    DOIhttps://doi.org/10.1585/jspf1958.22.217
    JOURNAL FREE ACCESS
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  • Mesurement of a Plasma Diamagnetism in the Slow Theta Pinch
    [in Japanese], [in Japanese]
    1969 Volume 22 Issue 4 Pages 230-244
    Published: 1969
    Released on J-STAGE: March 04, 2011
    DOIhttps://doi.org/10.1585/jspf1958.22.230
    JOURNAL FREE ACCESS
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  • Preliminary Experiment on the Plasma Confinement in the Heliotron P Field I
    Akihiro MOHRI, Shinzaburo MATSUDA, Masatoshi INOUE, Koji UO
    1969 Volume 22 Issue 4 Pages 245-268
    Published: 1969
    Released on J-STAGE: March 04, 2011
    DOIhttps://doi.org/10.1585/jspf1958.22.245
    JOURNAL FREE ACCESS
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    A magnetic mirror field having a minimum average B configuration can be produced by the combination of an usual mirror field and the magnetic field generated by a current-carrying ring, which is put on-the midplane of the mirror field and encircles the axis. This field-configuration forms a fundamental unit of the.Heliotron-P field. The bottom of the magnetic well is on the separatrix which is the surface woven by the lines of force passing the null-field circle of this field.
    The plasma is axially injected into the field through a small aperture limiter near the axis or through a circular narrow slit outside the separatrix. In both cases, the injected plasma quickly fills up the magnetic well due to the flute instability. This phenomenon bears the experimental evidence of the minimum average B field. After 250 μ sec from the injection, the plasma is very quiescent and its radial density profile becomes flat across the wide region of the plasma column and it falls rapidly at the periphery. The density decays with time, keeping this profile. In this stage, the over-all decay time of the plasma density is about 500 μ sec, which corresponds to 16 times the Bohm confinement time τB. The net radial loss time is longer than 45 τB, which is inferred from direct measurements of the mirror end loss and the losses towards the ring and its supports. The electron temperature remains almost constant at 11 eV.
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  • Erratum to : Loss Cone Instability in an External High Frequency Electric Field
    1969 Volume 22 Issue 4 Pages e1
    Published: 1969
    Released on J-STAGE: March 04, 2011
    DOIhttps://doi.org/10.1585/jspf1958.22.4_e1
    JOURNAL FREE ACCESS
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