DETERMINATION OF THE TRAPPING PARAMETERS OF GLOW PEAKS OF CAF2:DY(TLD-200) BY USING COMPUTER GLOV CURVE DECONCOLUTION METHOD
Computerized glow curve deconvolution method is used to determine the number of peaks, the order of kinetics b, the activation energy Ea,frequency factor s and number of the trapped electrons n0 associated with the glow peaks in single crystal of CaF2:Dy (TLD-200). Glow curve analysis indicate that the glow curve in the temperature region between room temperature and 250 oC can be best described as a superposition of six peaks. First five peaks are described by first-order kinetics and sixth peak general-order kinetic. The number of trapped electrons, activation energies and frequency factor for individual glow peaks are as follows: (Peak 1) 3x1013, 1.27 and 2.13x1017, (Peak 2) 6.3x1013, 1.01 and 9.2x1012, (Peak 3) 3.3x1014, 0.7 and 6.12x107, (Peak 4) 2.4x1014, 1.14 and 3.28x1012, (Peak 5) 1.5x1014, 0.84 and 2.56x108, (Peak 6) 2.4x1014, 0.98 and 1.76x109.
Turk. J. Phys., 25, (2001), 249-256. Full text: pdf Other articles published in the same issue: Turk. J. Phys.,vol.25,iss.3.