Title
OPTICALLY STIMULATED LUMINESCENCE STUDY OF SYNTHETIC QUARTZ: Correlation between OSL and TL of Synthetic Quartz,Used
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(i) OSL measured at room temperature (25C): The lower annealed sample followed by beta doses up to 25.2Gy exhibits the nonexponential shape of decay curve. It is attributed to role of shallow TL traps. The decay curve shifts toward exponential side with growth in OSL for higher annealed sample followed by higher dose. It is due to effect of phase transformation in quartz. (ii) OSL measured at 160C: The nonexponential shape of decay curve still appears at identical lower physical condition. It is attributed to retrapping of optically released electron still exists. It is evidence to growth of post OSLTL peaks at 230C and 375C. (iii) Post Irradiation Heat Treatment (PIHT) at 290C: Act as thermal transfer OSL process. In present work, OSL sensitivity doesn't show consistent behavior with PIHT. Either charges released for system or captured into deep traps. (iv) Cyclic OSL at 160C: The OSL intensity decreases with successive cycle. The post OSLTL glow curve indicates the stability of 230C peak and slow bleachability of 375C peak. The ESR spectra suggested the relation between luminescence output and color centers (E1' and Ge).
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