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Theoretical Approach to the Deformation‐induced Luminescence in Metals
Author(s) -
Chandra B. P.,
Khan M. S.,
Singh Seema R.,
Ansari M. H.
Publication year - 1996
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.2170310414
Subject(s) - mechanoluminescence , luminescence , deformation (meteorology) , materials science , radiative transfer , chemistry , mechanics , physics , analytical chemistry (journal) , optics , composite material , environmental chemistry
The present paper reports the mechanoluminescence (ML) produced during fracture of metals. The mechanism of ML in metals is based on the generation of holes during the decay of mobile dislocations on the surface and subsequent electron‐hole radiative recombination. The following equation is derived for the transient ML intensity of the fracto‐induced ML in metals. The above equation shows that I should be maximum for a particular value of time t . For β 〉 α,. This equation shows that I should decrease exponentially with time. For the fracto‐induced ML in metals, t M and I m may be expressed by the following equations. The spectroscopy of ML in metals is also discussed. A good correlation is found between the theoretical and experimentals results.