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Rate‐equation approach to stage II damage curves of metals in terms of the two‐interstitial model
Author(s) -
Frank W.
Publication year - 1975
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2220720128
Subject(s) - dumbbell , annihilation , impurity , stage (stratigraphy) , work (physics) , electrical resistivity and conductivity , radiation damage , rate equation , materials science , trapping , thermodynamics , line (geometry) , chemistry , physics , irradiation , molecular physics , condensed matter physics , kinetics , mathematics , nuclear physics , classical mechanics , quantum mechanics , geometry , medicine , paleontology , ecology , biology , physical therapy
A theoretical expression describing the increase of the electrical resistivity of metals as a result of irradiations at temperatures in the recovery stage II is derived within the frame‐work of the two‐interstitial model of radiation damage. The derivation is based on the use of rate equations taking into account the following processes: simultaneous production of mobile crowdions or immobile dumbbell interstitials, and of an equal number of immobile vacancies; trapping or athermal conversion of both off‐line and on‐line crowdions at impurities, dumbbells, trapped crowdions or nearby vacancies; annihilation of crowdions at vacancies. It is shown that, as a matter of principle, the information which may be obtained from stage II damage curves cannot suffice to exclude the two‐interstitial model. On the other hand, under favourable circumstances stage II damage curves may enable us to demonstrate the validity of the two‐interstitial model unambiguously and thus to rule out the one‐interstitial model.