DIELECTRIC CHANGES AND THERMOLUMINESCENCE OF SODIUM CHLORIDE AND LITHIUM FLUORIDE IRRADIATED WITH X-RAYS
The dielectric changes exhibited by sodium chloride and lithium fluoride on heating after x-ray irradiation were measured at a frequency of 500 kc/sec. The thermoluminescence was recorded. It was observed that the dielectric loss of both the samples increases during thermal bleaching. The difference between the dielectric losses of the crystals before and after coloration i.e., DELTA tan delta , for different stages of thermal bleaching was found to show steps, the temperature regions of which agree with the temperatures of the glow peaks. It is presumed that this observed excess dielectric loss is due to the large number of vacancies created by the destruction of color centers at the corresponding glow peak temperatures. (auth)
- Research Organization:
- Indian Inst. of Tech., Kharagpu, India
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-17-018153
- OSTI ID:
- 4735474
- Journal Information:
- Z. Physik, Journal Name: Z. Physik Vol. Vol: 172
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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