Photoelastic behaviour of ionic crystals

Ranganath, G. S. ; Rajagopalan, S. R. ; Ramaseshan, S. (1970) Photoelastic behaviour of ionic crystals Radiation Effects, 4 (2). pp. 313-318. ISSN 0033-7579

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A theory of photoelasticity in ionic crystals is proposed wherein the overlap of the electronic atmospheres of adjacent ions and the effect of strain on the ionic'polarisabilities are considered the dominant factors. The sign of the stress optical constant predicted by this theory is found to be in agreement with the experimental result. The change in the sign of the stress optical constant atlower wavelengths exhibited by some of the alkali halides is also explained. The pure temperature effect observed in the thermo-optic behaviour of crystals turns out to be a natural consequence of the proposed theory.

Item Type:Article
Source:Copyright of this article belongs to Gordon and Breach Science Publishers, New York,.
ID Code:93223
Deposited On:14 Jun 2012 12:40
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