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Online ISSN : 1884-9571
Print ISSN : 0451-2375
ISSN-L : 0451-2375
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Volume 47, Issue 3
Displaying 1-4 of 4 articles from this issue
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  • Data Processing for Plasma Experiments (1)
    Atsushi OGATA
    1982 Volume 47 Issue 3 Pages 233-256
    Published: 1982
    Released on J-STAGE: March 04, 2011
    DOIhttps://doi.org/10.1585/jspf1958.47.233
    JOURNAL FREE ACCESS
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    This paper reviews the data processing necessary for plasma experiments in the actual order of acquisition, analysis and storage. The whole paper consists of three parts and the present volume contains the first part whose contents are; §1 Introduction, §2 Acquisition (1) sampling (2) quantumization (3) trade-off between accuracy and time_duration of measurement, §3 Pre-Processing (1) comparison of analog and digital methods (2) direct-reading-type measurement (3) interporation and smoothing. The contents of second and third parts will be; §4 Reproduction, §5 Fitting, §6 Orthogonal Function Expansion, §7 Storage and Indexing, §8 Conclusion.
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  • Compact Metal Ion Beam Source Using Thermal Contact Ionizer
    Yoshiyuki SAKAI, Itsuo KATSUMATA, Takanori OSHIO
    1982 Volume 47 Issue 3 Pages 257-278
    Published: 1982
    Released on J-STAGE: March 04, 2011
    DOIhttps://doi.org/10.1585/jspf1958.47.257
    JOURNAL FREE ACCESS
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    A small and compact ion beam source has been developed for a heavy ion beam probe as a plasma diagnostic technique. The source consists of a thermal contact ionizer with a beam material reservoir, and an electrostatic accelerating lens system. The beam modulation is possible by means of a beam extracting electrode. An alkali or an alkali earth metal ion beam was produced at an energy up to 3 keV. The sourcefunctioned sufficiently in a magnetic field up to 2 kG. Especially, operating parameters for Cs+ and Ba+ ion beams were investigated in detail. A beam Current up to 10μ A and a diameter of 1 mm at a focussing point were easily obtained. A method is also presented to compensate both the beam current reduction and the beam profile distortion which were observed in the operation in a stronger magnetic field above 2 kG.
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  • Work Shop on Atomic Processes for Inertial Confinement Fusion
    Tsutomu WATANABE
    1982 Volume 47 Issue 3 Pages 279-283
    Published: 1982
    Released on J-STAGE: March 04, 2011
    DOIhttps://doi.org/10.1585/jspf1958.47.279
    JOURNAL FREE ACCESS
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    We present here the summary about “Work Shop on Atomic Processes for Inertial Confinement Fusion” which was held on 6-7 January 1982 at the Institute of Plasma, Physics, Nagoya University.
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  • RF Control of Impurity Transport
    Hideo SUGAI
    1982 Volume 47 Issue 3 Pages 285-291
    Published: 1982
    Released on J-STAGE: March 04, 2011
    DOIhttps://doi.org/10.1585/jspf1958.47.285
    JOURNAL FREE ACCESS
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    Two types of radiofrequency control of impurity transport are proposed; one is the diffusion coefficient control by RF impurity-ion heating, and the other is based on particle flux carried by externally launched waves in a plasma. A simple fluid model provides a usefull expression for the particle flux density which is driven by low-frequency electrostatic waves in an inhomogeneous multi-ion-species plasma. Owing to selective outward flux induced by RF, the impurity diffusion diminishes or even reverses the direction of the inward collisional diffusion.
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