Shinku
Online ISSN : 1880-9413
Print ISSN : 0559-8516
ISSN-L : 0559-8516
Search
Advanced search
OR
Browse
Search
Volume 5, Issue 1
Displaying 1-3 of 3 articles from this issue
Show all abstracts
    • |<
    • <
    • 1
    • >
    • >|
  • Floating Zone Refining by Electron Beam Melting
    Susumu YOSHIDA, Yoshio TAMURA
    1962 Volume 5 Issue 1 Pages 8-16
    Published: January 20, 1962
    Released on J-STAGE: September 29, 2009
    DOIhttps://doi.org/10.3131/jvsj.5.8
    JOURNAL FREE ACCESS
    Download PDF (2114K)
  • A Study on Adsorption and Desorption Characteristics of Ti-Ion Pump for Inert Gases by the Omegatron Type Mass Spectrometer
    Atsushi FUJINAGA, Masayuki GOTOH, Takao HANASAKA
    1962 Volume 5 Issue 1 Pages 17-21
    Published: January 20, 1962
    Released on J-STAGE: September 29, 2009
    DOIhttps://doi.org/10.3131/jvsj.5.17
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    The ion pump having titanium plane cathodes and operating with Penning's cold discharge principle was constructed. The magnetic flux was 1, 200 gauss and the high voltage between electrodes was about 4 KV. It is characteristics in reference to adsorption and re-desorption were measured especially for noble gases such as argon and helium. The instability for argon was also found in the same way as other papers had described. The omegatron type mass spectrometer, which had been developed at our laboratory, was used for analysis of desorption, and re-desorption of argon and helium from an ion pump after pumping operation had been stopped. The variations of speed of exhaust for such noble gases are described and our consideration for pumping mechanism is discussed.
    View full abstract
    Download PDF (879K)
  • Residual Gases in Metal Vacuum System
    Masami MICHIJIMA, Jun OKANO, Atsushi FUJINAGA, Koreichi OGATA
    1962 Volume 5 Issue 1 Pages 22-27
    Published: January 20, 1962
    Released on J-STAGE: September 29, 2009
    DOIhttps://doi.org/10.3131/jvsj.5.22
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    Mass spectrometrical investigation of residual gases in a stainless steel enveloped mass spectrometer, evacuated with a titaniumgetter ion pump, was carried out. Partial pressure of nitrogen of 10-13 mmHg could be measured by means of a secondary electron multiplier which served as an ion detector of the mass spectrometer. Mass 2 (H2) and 28 (N2+CO) were observed to be the dominant constituents of the residual gas. It was also found that considerable amount of argon existed in the residual gas. Hydrocarbon found in the residual gas could be reduced markedly by baking the system up to about 300°C.
    View full abstract
    Download PDF (2037K)
    • |<
    • <
    • 1
    • >
    • >|
feedback
 Top