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Influence of the irradiation temperature on the intracascade ion mixing

Published online by Cambridge University Press:  31 January 2011

M. Alurralde ,
A. Caro  and
M. Victoria
M. Alurralde
Affiliation:
Paul Scherrer Institute, 5232 Villigen-PSI, Switzerland
A. Caro
Affiliation:
Paul Scherrer Institute, 5232 Villigen-PSI, Switzerland
M. Victoria
Affiliation:
Paul Scherrer Institute, 5232 Villigen-PSI, Switzerland
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Abstract

We present a description of the thermal behavior of cascades in Cu and Ag over a large energy range and irradiation temperatures. For this purpose the binary collision approximation, which gives the profile of the energy deposition, is coupled to a simplified version of the heat equation. In the present calculations, the original liquid drop model [M. Alurralde, A. Caro, and M. Victoria, J. Nucl. Mater. 183, 33 (1991)] has been extended to the case where the lattice is at finite temperatures. The resulting evolution of the liquid cascade is analyzed for PKA energies up to 1 MeV, and the results are compared to experimental observations of mixing rates. We obtain a temperature dependence that adds to the traditional Radiation Enhanced Diffusion, RED, in very good qualitative agreement with experiments on materials showing thermal spikes.

Type
Articles
Information
Journal of Materials Research , Volume 8 , Issue 3 , March 1993 , pp. 449 - 454
Copyright
Copyright © Materials Research Society 1993

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References

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