Applications of the three points analysis method for obtaining the trap parameters and the separation of thermoluminescence glow curve into its components

• Published in: Radiation effects and defects in solids Vol. 161; no. 10; pp. 579 - 590
• Main Authors: Rasheedy, M. S., El-Sherif, M. A., Hefni, M. A.
• Format: Journal Article
• Language: English
• Published: Taylor & Francis 01.10.2006
• Subjects: Glow peaks; Pr; Thermoluminescence; Trapping parameters
• ISSN: 1042-0150; 1029-4953
• DOI: 10.1080/10420150600879732

Here, we apply a recently developed technique to separate a composite thermoluminescence (TL) glow curve into its individual components and to evaluate the trap parameters of the individual TL glow peaks. These parameters include the order of kinetics b, the activation energy E (eV) and the frequency factor S (s −1 ) or the pre-exponential factor S″ (s −1 ). Recently, a general equation was developed to estimate the order of kinetics b. The characteristic point of this equation is that any set of three data points in a TL glow curve can yield b. Using this characteristic, an improved procedure was suggested to separate a composite glow curve, which includes several overlapping peaks, into its individual components and to obtain the trap parameters of the individual glow peaks. The method was applied here to analyze and determine the trap parameters of the TL glow curve of the promising TL dosimetric material, double potassium yttrium fluoride (K 2 YF 5 ) doped with praseodymium ions (Pr 3+ ), in response to γ-irradiation.