Shinku
Online ISSN : 1880-9413
Print ISSN : 0559-8516
ISSN-L : 0559-8516
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Volume 4, Issue 5
Displaying 1-4 of 4 articles from this issue
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  • Ceramic-to-Metal Seals by Reactive Alloying Method
    Tatuo MUROMATU, Hideo OGINO, Tosikazu YOSIOKA
    1961 Volume 4 Issue 5 Pages 182-190
    Published: May 20, 1961
    Released on J-STAGE: September 29, 2009
    DOIhttps://doi.org/10.3131/jvsj.4.182
    JOURNAL FREE ACCESS
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  • The Vacuum Melting of Uranium
    Kenmei HIRANO
    1961 Volume 4 Issue 5 Pages 191-193
    Published: May 20, 1961
    Released on J-STAGE: September 29, 2009
    DOIhttps://doi.org/10.3131/jvsj.4.191
    JOURNAL FREE ACCESS
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  • Influence of the Room Temperature on the Ionization Gauges
    Katsuya NAKAYAMA, Hiroshi ISHII
    1961 Volume 4 Issue 5 Pages 194-197
    Published: May 20, 1961
    Released on J-STAGE: September 29, 2009
    DOIhttps://doi.org/10.3131/jvsj.4.194
    JOURNAL FREE ACCESS
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    Theoretical treatments on the erroneous readings of the ionization gauges caused by the variation of the room temperature are discribed.
    It has been concluded that, even if the readings of gauge (A in Fig. 1) is maintained constant, the following relations are derived :
    (1) PB'/PB =√TB'/TB √TA'/TA
    (2) S' / S=√TB/TB' √TA/TA'
    where PB and TB (°K) are the pressure and the temperature, respectively, in the manifold (B in Fig. 2) in which the pressure is to be measured, S the sensitivity of the ionization gauges, and TA (°K) the temperature of the gauge envelope. Dash marks show the condition after shifting the temperature.
    In order to measure the low pressure with accuracy within several per cent, it is necessary to correct the results or to keep the room temperature in constant.
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  • Sorption of Water Vapour on Glass Surface and Oil Film in Vacuum
    Yutaka TUZI
    1961 Volume 4 Issue 5 Pages 198-209
    Published: May 20, 1961
    Released on J-STAGE: September 29, 2009
    DOIhttps://doi.org/10.3131/jvsj.4.198
    JOURNAL FREE ACCESS
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    The sorption of water vapour on borosilicate glass and evaporated oil films of Lion A, Octoil 5, Apiezon C and Myvane was studied in the pressure region 10-5 Torr. The sorption is includes at least two phenomena, the activated adsorption and the diffusion. The rate of activated adsorption decreases exponentially with the increase of the amount of sorption. The activation energy of diffusion at 2-3-320°K is 7-11 Kcal/mole, and the diffusion constant is ca 10-18cm2/sec. A part of the sorbed. molecules desorbes by the evacuation at room temperature, and the rate of desorption is given by the equation of the second order reaction.
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