Shinku
Online ISSN : 1880-9413
Print ISSN : 0559-8516
ISSN-L : 0559-8516
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Volume 22, Issue 10
Displaying 1-4 of 4 articles from this issue
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  • Invention on Electric Lamp by Edison and the Vacuum
    Tadashi FUKATSU
    1979 Volume 22 Issue 10 Pages 329-340
    Published: October 20, 1979
    Released on J-STAGE: September 04, 2009
    DOIhttps://doi.org/10.3131/jvsj.22.329
    JOURNAL FREE ACCESS
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  • Reactive Sputtering Process of Tin
    Touichi HATANO, Yoichiro UEMURA, Kenji UCHIDA
    1979 Volume 22 Issue 10 Pages 341-345
    Published: October 20, 1979
    Released on J-STAGE: September 04, 2009
    DOIhttps://doi.org/10.3131/jvsj.22.341
    JOURNAL FREE ACCESS
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    The ions which were generated at the vicinity of the tin cathode by oxygen low pressure reactive sputtering were investigated.
    In the energy distributions of the ions generated by the sputtering process, the ion current decreased exponentially with increasing ion energy. On the other hand, the ions generated in the discharge space showed maximum at about 20 eV.
    Sn+ and SnO+ were found during reactive sputtering, but neither positive nor negative ion of SnO2 was detected. It is considered that for the formation of tin oxide film on the substrate, Sn+ and SnO+ species generated at the cathode collide with discharge gas for neutralization.
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  • Thermochemical Study of Thermal Negative Ion Production through Dissociation of Polyatomic Molecules
    Hiroyuki KAWANO
    1979 Volume 22 Issue 10 Pages 346-351
    Published: October 20, 1979
    Released on J-STAGE: January 22, 2010
    DOIhttps://doi.org/10.3131/jvsj.22.346
    JOURNAL FREE ACCESS
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    Production of thermal negative ion (X-) from a polyatomic molecule (ZX) incident upon a heated metal surface is investigated theoretically from the viewpoint of thermochemistry. Quantitative expressions of emitted ion current i- (X-) as a function of surface temperature (T) are derived for the two extreme cases as to the degree of dissociation (γ) of ZX on the surface.
    Namely, i- (X-) ≅ K1 exp [A (X) -φ] for γ ≅ 1.0K2T-1/4exp [A (X) -φ-D (ZX) /2/kT] for γ << 1.0
    Here A (X), φ and D (ZX) are the electron affinity of X, the work function of the surface and the dissociation energy of ZX, respectively, and K's are virtually independent of T under a usual experimental condition. For the intermediate value of γ, however, i- (X-) cannot be expressed in such a simple form. These results indicate that neither A (X) nor D (ZX) can be determined accurately by measuring temperature dependence of i- (X-) if the condition γ ≅ 1.0 or γ << 1.0 is not satisfied in the temperature range investigated.
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  • Erratum to : Electron Microscope Equipped with Field Emission Electron Gun
    1979 Volume 22 Issue 10 Pages 361
    Published: 1979
    Released on J-STAGE: January 22, 2010
    DOIhttps://doi.org/10.3131/jvsj.22.10_361
    JOURNAL FREE ACCESS
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