Shinku
Online ISSN : 1880-9413
Print ISSN : 0559-8516
ISSN-L : 0559-8516
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Volume 6, Issue 9
Displaying 1-5 of 5 articles from this issue
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  • On the Thermal Transpiration
    Tetsuo TAKAISHI
    1963 Volume 6 Issue 9 Pages 345-352
    Published: September 20, 1963
    Released on J-STAGE: September 29, 2009
    DOIhttps://doi.org/10.3131/jvsj.6.345
    JOURNAL FREE ACCESS
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  • Automatic Pressure Control of an Industrial Vacuum Equipment
    Hiroshi NAKAGAWA
    1963 Volume 6 Issue 9 Pages 353-357
    Published: September 20, 1963
    Released on J-STAGE: September 29, 2009
    DOIhttps://doi.org/10.3131/jvsj.6.353
    JOURNAL FREE ACCESS
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    The operating pressure of almost all vacuum equipment should be kept as lowest as possible, so the pressure control usually has not to be done. In some cases, i. e. vacuum fractionating distillation, the pressure should be kept as constant as the operators demand. There are many reports and ideas of such controlling methods, but they are almostly limited to be applied to the laboratory scales.
    The auther applied the conventional pressure-difference tranceducer (D. P. cell, Foxboro Instrumentation Co., Mass., U.S.A.) as the vacuum sensing unit. Except specially made control valve (Fig. 7), all other components, i. e. indicator, recorder, controller and diaphragm motor are also commercially available.
    By this system (Fig. 3), the author successed to maintain the pressure reliably and completely in an industrial scale equipment as indicated in Fig. 6.
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  • [title in Japanese]
    [in Japanese], [in Japanese]
    1963 Volume 6 Issue 9 Pages 357-358
    Published: September 20, 1963
    Released on J-STAGE: September 29, 2009
    DOIhttps://doi.org/10.3131/jvsj.6.357
    JOURNAL FREE ACCESS
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  • Error Correction Method for Tolansky-type Interferometry
    Keiichi MATANO
    1963 Volume 6 Issue 9 Pages 359-360
    Published: September 20, 1963
    Released on J-STAGE: September 29, 2009
    DOIhttps://doi.org/10.3131/jvsj.6.359
    JOURNAL FREE ACCESS
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  • Performance of Ionization Gauges in Magnetic Field
    Tamotsu SUZUKI
    1963 Volume 6 Issue 9 Pages 361-367
    Published: September 20, 1963
    Released on J-STAGE: September 29, 2009
    DOIhttps://doi.org/10.3131/jvsj.6.361
    JOURNAL FREE ACCESS
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    The perfomances of ionization gauges (magnetron gauge, B-A Gauge, etc.) in the magnetic field are described. Below 10-3 Torr, the pressure is directly, proportional to the ratio of positive ion current/electrical emission current in the normal triode valves and this principle is used for pressure measurement with an ionization gauge.
    But the behaviours of the ions and the electrons in gauge valve are much affected by the magnetic field. If the magnetic field is sufficiently higher than critical field B0, most of the electrons fail to reach the anode. The ion current recorded varies with the magnetic field strength and the angle of the direction against the electric field at a constant pressure. Then it upsets the linear relation between ion current and pressure.
    It is observed that in the magnetic field the gauge electrode is heated locally by electron bombardment for outgassing and melted at the normal power.
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