Shinku
Online ISSN : 1880-9413
Print ISSN : 0559-8516
ISSN-L : 0559-8516
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Volume 11, Issue 4
Displaying 1-3 of 3 articles from this issue
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  • Mass Filter
    Atsushi FUJINAGA, Takao HANASAKA
    1968 Volume 11 Issue 4 Pages 112-119
    Published: April 20, 1968
    Released on J-STAGE: September 29, 2009
    DOIhttps://doi.org/10.3131/jvsj.11.112
    JOURNAL FREE ACCESS
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  • Secondary Electron Emission from Diffusion Pump Oils and a Vacuum Grease
    Kazuo ISHIKAWA, Keisuke GOTO
    1968 Volume 11 Issue 4 Pages 120-127
    Published: April 20, 1968
    Released on J-STAGE: September 29, 2009
    DOIhttps://doi.org/10.3131/jvsj.11.120
    JOURNAL FREE ACCESS
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    Secondary electron emission (SEE) coefficient a and inelastic reflection coefficient η of Octoil-S, DC-704, and DC-705 have been studied by a pulsed-beam method in the primary range 502000 eV. For these three specimens, the maximum values of a are 2.8, 2.0, and 2.0, respectively, and the primary energies corresponding to the maximum a are equally 200 eV. The maximum values of η are 0.14, 0.17, and 0.17, respectively. SEE properties of DC-705 are analyzed by using δ-η diagram (δ =σ-η) and the effective maximum emission depth of true secondaries is determined to be 2030Å. The results are compared with those for other molecular substances. It is also shown that the observation of SEE gives a very sensitive method for detecting organic contamination in vacuum systems.
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  • [title in Japanese]
    [in Japanese], [in Japanese]
    1968 Volume 11 Issue 4 Pages 128-136
    Published: April 20, 1968
    Released on J-STAGE: September 29, 2009
    DOIhttps://doi.org/10.3131/jvsj.11.128
    JOURNAL FREE ACCESS
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