Problems of Producing a Clean Surface by Outgassing in Ultrahigh Vacuum

  • Imre Farkass


The surface of a material—solid or liquid—is “clean,” if there are no adsorbed foreign atoms or molecules on the surface and no chemisorbed or absorbed foreign atoms or molecules in the surface layers. The simplest way to visualize such a clean surface is to break a piece of solid pure metal.


Test Specimen Vacuum System Clean Surface Equilibrium Pressure Ultrahigh Vacuum 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    B. B. Dayton. “Relations Between Size of Vacuum Chamber, Outgassing Rate, and Required Pumping Speed,” Trans. Vacuum Symp. Am. Vacuum Soc. 101–119, 1959.Google Scholar
  2. 2.
    B. B. Dayton, ‘Outgassing Rate of Contaminated Metal Surfaces,“ Trans. Vacuum Symp. Am. Vacuum Soc. 42–57, 1961.Google Scholar
  3. 3.
    Imre Farkass and E. J. Barry, °Improved Elastomer Seal Designs for Large Metal Ultrahigh Vacuum Systems Permitting Ultimate Pressures in the Low 10–10 mm Hg Range,’ Trans. Vacuum Symp. Am. Vacuum Soc. 35–38,. 1960.Google Scholar
  4. 4.
    Imre Farkass and E. J. Barry, “Study of Sealants for Space Environment,” Summary Report to the Army Ballistic Missile Agency, U.S. Army Ordnance Missile Command, Contract DA–19–020–506–ORD–5097, January 1961.Google Scholar
  5. 5.
    L. J. Bonis and G. S. Ansell, “Materials Selection and Development for Application in Inter-Planetary Vehicles,” Trans. Vacuum Symp. Am. Vacuum Soc. 286–292, 1962.Google Scholar
  6. 6.
    L. J. Bonis and Imre Farkas s, “Ultrahigh Vacuum Environmental Testing and Materials Development for the Apollo Guidance System,” Final Report to Massachusetts Institute of Technology Instrumentation Laboratory, Subcontract No. 208 (NASA Contract NAS9–153), March 1963.Google Scholar
  7. 7.
    J. A. Becker. “Adsorption on Metal Surfaces and its Bearing on Catalysis,’ Advances in Catalysis, Vol. 7, 1955.Google Scholar
  8. 8.
    Imre Farkass, “Ultrahigh Vacuum Design for Large Space Simulation Systems,” Proc. Inst. Environ. Sci. 95 and 137–146, 1962.Google Scholar
  9. 9.
    Imre Farkass, ‘Metal Ultrahigh Vacuum Systems,“ Report on the Twenty-Second Ann. Conf. Phys. Electronics, Massachusetts Institute of Technology, pp. 315–324, 1962.Google Scholar
  10. 10.
    hure Farkass, P. R. Gould, and G. W. Horn, “1 • 10 11Torr in Large Metal Chambers, Its Attainment and Application Results,” Trans. Vacuum Symp. Am. Vacuum Soc. 273–277, 1962.Google Scholar
  11. 11.
    Imre Farkass and E. J. Barry, “ The Origins and Composition of the Limiting Gas Load in Ultrahigh Vacuum Systems,” Trans. Vacuum Symp. Am. Vacuum Soc. 66–72, 1961.Google Scholar
  12. 12.
    John C. L. Shabeck, Jr., “Operation of a 20 Cubic Foot Chamber in the 10–11 Torr Range,” Trans. Vacuum Symp. Am. Vacuum Soc. 278–281, 1962.Google Scholar
  13. 13.
    Imre Farkass and G. W. Horn, “Cryogenic Pumping in Space Simulators,” 56th Ann. Meeting Am. Inst. Chem. Engrs., Paper No. 45-b, 1963.Google Scholar

Copyright information

© Plenum Press 1966

Authors and Affiliations

  • Imre Farkass
    • 1
  1. 1.Ilikon CorporationNatickUSA

Personalised recommendations