Kakuyūgō kenkyū
Online ISSN : 1884-9571
Print ISSN : 0451-2375
ISSN-L : 0451-2375
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Volume 14, Issue 4
Displaying 1-5 of 5 articles from this issue
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  • Excitation of Longi tudinal Oscillations in the plasma-beam interaction
    Kunihiro Suzuki
    1965 Volume 14 Issue 4 Pages 340-348
    Published: 1965
    Released on J-STAGE: March 04, 2011
    DOIhttps://doi.org/10.1585/jspf1958.14.340
    JOURNAL FREE ACCESS
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  • Microwave Prkopagation through a Plasma in a Magnetic Field
    Hiroshige Watanabe, Keiichiro Sugita, Shigeo Nagao
    1965 Volume 14 Issue 4 Pages 349-363
    Published: 1965
    Released on J-STAGE: March 04, 2011
    DOIhttps://doi.org/10.1585/jspf1958.14.349
    JOURNAL FREE ACCESS
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  • On the Theory of Cusp Losses
    Hiroshi Ito
    1965 Volume 14 Issue 4 Pages 364-372
    Published: 1965
    Released on J-STAGE: March 04, 2011
    DOIhttps://doi.org/10.1585/jspf1958.14.364
    JOURNAL FREE ACCESS
    Download PDF (551K)
  • Axial Field Plasma Betatron
    Goro Miyamoto, Giichi Iwata, Shigeru Mori, Tihiro Ohkawa, Masaji Yoshi ...
    1965 Volume 14 Issue 4 Pages 373-432
    Published: 1965
    Released on J-STAGE: August 16, 2011
    DOIhttps://doi.org/10.1585/jspf1958.14.373
    JOURNAL FREE ACCESS
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    In part I, introductory remarks and the description of the axial field plasma betatron are given.
    In part II, calculations concerning the motion of electrons in this machine are given, and it shows that electrons can be accelerated to 500 keV when the confining magnetic field is 3kG. The energies of electrons determined from measurements of X-ray from target were a little lower.
    In part III, preionized plasma was measured by double probe. Plasma of Te ≅ 4eV, n ≅ 1012cm-13 was obtained, and it decayed by diffusion according to 1/13 law.<BR.In part IV, the energy of the accelerated electrons in plasma was measured in the various conditions_Maximum energy of about 300 ke V was observed with 4 × 10-4 mmHg helium. It reached about 1MeV when helium was absent and the pressure was 3 × 10-5 mmHg In part V, direct measurements of energy distribution of x-ray as one method of energy determination of electrons were described.
    The results from this were compared with those from the absorption method.
    In part VI, the electron temperature of the plasma was measured spectroscopically, and it was about 40 eV.
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  • The reliability of measuring low electron density plasma by the microwave free space method
    Shinji Shiobara
    1965 Volume 14 Issue 4 Pages 433-456
    Published: 1965
    Released on J-STAGE: March 04, 2011
    DOIhttps://doi.org/10.1585/jspf1958.14.433
    JOURNAL FREE ACCESS
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    Electron density measurements of steady state helium plasmas in glass cylinders 17 to 96mm in diameter are made at 34GC and at pressures of 0.08 to 1.0mmHg and densities of about 5×1010 to 1012 cm-3.
    Standard pyramidal horns of 20db gain and teflon lenses about 75mm in diameter are used. Errors arising from the multiple reflection between antennas and the spreading of microwave beams incident on plasmas are investigated. It is shown that the reliability of more than 90% is attainable for low density plasmas when an, appropriate use is made of the free space method. The reliability obtained by Langmuir probe method is taken as reference.
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