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Determination of trapping parameters of calcined alumina by various heating rate methods

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Author: 
Dr. Md Raheijuddin Sheikh
Abstract: 

Trapping parameters of calcined alumina (alpha phase) has been determined by resorting to Various Heating Rate (VHR) method in the dose range from 5 to 100Gy. Peak finding by second derivative plot of the glow curve is used. It is observed that highly overlapped traps of charge (electron) could be observed by variation of radiation dose. As many as twelve traps could be located for the glow peaks in the range of temperature from 350 to 770 K. The traps are pretty close to each other and also showing frequency factor more or less constant with a value 4.8 ± 1.4 × 1011s-1.

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