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Interplay of Soret vs. Normal Impurity Diffusion During Laser or E-Beam Induced Heat Flow Transients in Metals

Published online by Cambridge University Press:  15 February 2011

L.F. Dona' Dalle Rose
Affiliation:
Unità G.N.S.M.-C.N.R., Istituto di Fisica dell 'Università, 35100, Padova, Italy
A. Miotello
Affiliation:
Istituto per la Ricerca Scientifica e Tecnologica, 38050 Povo (Trento), Italy
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Abstract

In the growing amount of the experimental data on the diffu sion processes of implanted impurities in a metal sample irradiated by highly energetic and very short pulses, some order may be introduced by the knowledge of the structure of induced thermal transient. The differences in such a structure due to two different energy sources (laser and electron beam) are de scribed with reference to the conditions under which Soret diffusion may be experimentally observed as distinct from nor mal diffusion. Laser induced transient seem to offer this possibility.

Some previously reported diffusion processes in laser irra diated systems are reinterpreted on this basis, showing the importance of the Soret effect.

Type
Research Article
Copyright
Copyright © Materials Research Society 1982

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References

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