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Radiation Damage and Gas Diffusion in Molybdenum Under Deuteron Bombardment

  • G. M. McCracken
  • S. K. Erents

Abstract

The release of gas from metals after implantation has been studied for many years(1). A case of interest both from a fundamental point of view and from the application to controlled thermonuclear experiments is the bombardment of metals with hydrogen ions. This case is unique because of the high diffusion coefficient and high solubility of hydrogen in metals. In previous papers we have examined in detail the trapping and release of deuterium in nickel.(2,3) It was shown that the release rate is much less rapid than expected on the basis of thermal diffusion and there is considerable evidence that radiation damage by the incident ions produced trapping sites which inhibited subsequent diffusion by the implanted gas atoms. Similar evidence has been obtained for the helium tungsten system by Kornelsen(4) who was also able to identify the types of defect responsible for sites of different binding energies. In the investigation of nickel, estimates were made of the binding energies of different sites and their population as a function of incident ion dose.

Keywords

Radiation Damage Thermal Desorption Damage Rate Trapping Site Damage Site 
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References

  1. 1.
    CARTER, G and COLLIGON, J S. 1968 Ion bombardment of Solids Ch 8, Heinemann London.Google Scholar
  2. 2.
    ERENTS, S K and MCCRACKEN, G M. 1969 Brit J Appl Phys 2, 1397–1405.Google Scholar
  3. 3.
    ERENTS, S K and MCCRACKEN, G M. 1970 Radiation Effects 3, 123–129.CrossRefGoogle Scholar
  4. 4.
    KORNELSEN, E. 1972 Radiation Effects 13, 227–236.CrossRefGoogle Scholar
  5. 5.
    MCCRACKEN, G M, MAPLE J H C and WATSON H H H. 1966 Rev Sci Instrum 37, 860–6.CrossRefGoogle Scholar
  6. 6.
    MCCRACKEN, G M and MAPLE, J H C. 1967 Brit J Appl Phys 18, 919–30.CrossRefGoogle Scholar
  7. 7.
    KOHL, W H. 1960 Materials and Techniques for electron tubes pg 319, Reinhold New York.Google Scholar
  8. 8.
    ERENTS, S K. 1972 unpublished.Google Scholar
  9. 9.
    JONES, P M S, GIBSON R and EVANS, J A. 1966 Ukaea Report No AWRE O-16/66.Google Scholar
  10. 10.
    HEUMANN, TH AND DOMKE, E. 1972 Proceedings of the International Conference on Hydrogen in Metals, Jülich, Vol 2, pg 492.Google Scholar
  11. 11.
    MCNABB, A and FOSTER, P K. 1963 Trans Met Soc AIME 227 618.Google Scholar
  12. 12.
    ORIANI, R A. 1970 Acta Met 18, 147.CrossRefGoogle Scholar
  13. 13.
    FRAUENFELDER, R. 1969 J of Vac Sci and Tech 6, 388–397.CrossRefGoogle Scholar

Copyright information

© Plenum Press, New York 1974

Authors and Affiliations

  • G. M. McCracken
    • 1
  • S. K. Erents
    • 1
  1. 1.UKAEA Culham LaboratoryAbingdon, BerkshireEngland

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