Dislocation models of mechanoluminescence in γ- and X-irradiated alkali halides crystals |
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Authors: | BP Chandra M Elyas B Majumdar |
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Institution: | Department of Physics, Government Science College, Raipur 492002, India |
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Abstract: | The mechanoluminescence appears in the elastic, plastic and fracture regions of γ- and X-irradiated KCl and NaCl crystals. A linear relation is found between the mechanoluminescence intensity and the newly created dislocations. Four models are proposed for the mechanoluminescence excitation during the movement of dislocations. These models are: dislocation unpinning model, dislocation interaction model, dislocation defect stripping model, and dislocation innihilation model. The dislocation annihilation model seems to be a dominating process for the M.L. excitation in γ- and X-irradiated alkali halide crystals. |
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