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Damage Generation by Electronic Excitations in Crystalline Metals

  • A. Dunlop (a1) and D. Lesueur (a1)
Extended abstract
EXTENDED ABSTRACT

This paper will give a rapid overview of the main experimental results concerning the effects of high electronic energy deposition in metallic targets and present a tentative model based on the Coulomb explosion mechanism. More detailed reviews have been made recently concerning both the experiments [1–3] and the theoretical model [4].

High levels of localized energy deposition in electronic excitation are easily obtained using GeV heavy ions which during their slowing-down typically transfer a few keV/Å to the electronic system of the target and a few eV/Å in elastic collisions with target nuclei. In insulators and organic materials, it is well-known that both slowing-down processes contribute to damage creation, whereas in metals it has been claimed for a long time that the sole nuclear collisions are involved in damage processes. Although this last assertion remains true for some metals such as Cu, Ag, W, Cu3Au …[2], high levels of electronic excitation can induce a partial annealing of the defects resulting from nuclear collisions in Fe, Ni, Nb, Pt…. lead to additional defect creation in Fe, Co, Zr, Ti… [2] or even to phase transformations in NiZr2 [5], Ni3B[6], NiTi [7], Ti [8]… In the following, we shall only focuss on the last two effects.

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References
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1.Dunlop A. and Lesueur D., Materials Science Forum 97–99, 553 (1992).
2.Dunlop A. and Lesueur D., Shim'92 - Bensheim - Germany, May 1992. To be published in Radiat. Eff. Defects in Solids.
3.Dunlop A., Lesueur D. and Barbu A. - Proceedings of the International Conference on Evolution of Microstructure in Metals During Irradiation, Muskoka (Canada) (September 1992). To be published in Journal of Nuclear Materials.
4.Lesueur D. and Dunlop A., Shim'92 - Bensheim - Germany, May 1992. To be published in Radiat. Eff. Defects in Solids.
5.Barbu A., Dunlop A., Lesueur D. and Averback R.S., Europhys. Lett. 15, 37 (1991)
6.Audouard A., Balanzat E., Bouffard S., Jousset J. C., Chamberod A., Dunlop A., Lesueur D., Fuchs G., Spohr R., Vetter J. and Thomé L., Phys. Rev. Lett. 65, 875 (1990).
7.Barbu A. et al. To be published.
8.Dammak H., Barbu A., Dunlop A., Lesueur D. and Lorenzelli N., accepted for publication in Phil. Mag. Letters.
9.Sikka S. K., Vohra Y. K. and Chidambaram R., Progress in Materials Science 27, 245 (1982).
10.Dimitrov C., Dammak H., Legrand P., Dunlop A. and Lesueur D., Shim'92 -Bensheim - Germany, May 1992. To be published in Radiat. Eff. Defects in Solids.
11.Marfaing J., Marine W., Vidal B., Toulemonde M., Hage Ali M. and Stoquert J. P., Appl Phys. Lett. 57, 1739 (1990).
12.Leguay R., Dunlop A. and Chevallier J., Shim'92 - Bensheim - Germany, May 1992. To be published in Radiat. Eff. Defects in Solids.
13.Dufour C., Bauer Ph., Marchai G., Grilhé J., Jaouen C., Pacaud J. and Jousset J.C., Shim'92 - Bensheim - Germany, May 1992. To be published in Radiat. Eff. Defects in Solids.
14.Toulemonde M., Dufour C. and Paumier E., Phys. Rev. B46, 14362 (1992).
15.Legrand P., Morillo J. and Pontikis V., Shim'92 - Bensheim - Germany, May 1992. To be published in Radiat. Eff. Defects in Solids.
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