Negative-Ion Sputtering of Tungsten Bombarded with Alkali Metal Ions

  • V. A. Shustrov
  • A. Kh. Ayukhanov


Analysis of the conditions governing earlier experiments on cathodic sputtering indicates that, even under the best vacuum conditions attainable, the desired purity of cold-irradiated surfaces is never achieved in the course of cathodic sputtering, owing to the occurrence of adsorption as well as the penetration of the primary ions. Hence some of the power of the ion beam is used up in ejecting contaminant atoms introduced both by the prinary-ion beam itself and also by the adsorption of residual gases from the main volume of the apparatus. A mass-spectrometric study of the composition of the sputtered particles [1–3] reveals molecular ions corresponding to chemical compounds formed by the target atoms with adsorbed gases. Using a radio-isotope method, we showed earlier [4] that the sputtering of tungsten in the form of negative ions might constitute a substantial proportion of the total sputtering. The mechanism underlying the sputtering of target material in the form of chemical compounds should clearly differ from that underlying its sputtering from the lattice of the pure material.


Secondary Emission Accommodation Coefficient Alkali Metal Atom Tungsten Atom Main Volume 
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.
    R. C. Honig, J. Appl. Phys., 29:3 (1958).CrossRefGoogle Scholar
  2. 2.
    Ya. M. Fogel’, R. P. Slabospitskii, and N. M. Karnaukhov, Zh. Tekhn. Fiz. 30:7 (1960).Google Scholar
  3. 3.
    V. E. Krohn, J. Appl. Phys., 33:12 (1962).CrossRefGoogle Scholar
  4. 4.
    V. A. Shustrov, V. I. Poltoratskii, and A. Kh. Ayukhanov, Izv. Akad. Nauk Uzbek. SSR, Ser. Fiz.-Mat. Nauk, No. 2, pp. 65–69 (1963).Google Scholar
  5. 5.
    U. A. Arifov, Interaction of Atomic Particles with the Surface of a Metal, Izd. AN Uzb. SSR, Tashkent (1961).Google Scholar
  6. 6.
    H. G. Scott, J. Appl. Phys., 33:6 (1962).ADSCrossRefGoogle Scholar
  7. 7.
    W. Laegreid and G. K. Wehner, J. Appl. Phys., 32(3):365 (1961).ADSCrossRefGoogle Scholar
  8. 8.
    M. I. Guseva, Fiz. Tverd. Tela, 1:10 (1959).Google Scholar
  9. 9.
    J. W. McBain, Sorption of Gases and Vapors by Solids [Russian translation], Gostekhizdat Fiz.-Mat. Lit, ONTI, Moscow (1934).Google Scholar
  10. 10.
    J. Kaye and T. Laby, Tables of Physical and Chemical Constants [Russian translation], Gostekhizdat Fiz.-Mat. Lit., Moscow (1962).Google Scholar

Copyright information

© Consultants Bureau, New York 1971

Authors and Affiliations

  • V. A. Shustrov
  • A. Kh. Ayukhanov

There are no affiliations available

Personalised recommendations