Analysis of kinetics and trapping parameters of LiF:Mg, Ti thermoluminescent dosimeters by general order model

Autor: Mehdi Sohrabi, Mostafa Zahedifar, M. Jafarizadeh
Rok vydání: 1998
Předmět:
Zdroj: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 416:446-451
ISSN: 0168-9002
Popis: Kinetics and trapping parameters of glow peaks 2–5 of LiF : Mg, Ti thermoluminescent dosimeters (TLD-100) were determined by using variable heating rate (VHR), isothermal decay (ID) and initial rise (IR) methods using general-order (GO) kinetics. For peaks 2–5, the order of kinetics was found to be 1.3, 1.15, 1.3 and 1.25, respectively. The mean activation energy ( E ) and mean frequency factor ( s ) for peaks 2–5 were determined for the three methods to be, respectively, 1.14 eV and 3.2×10 14 s −1 for peak 2; 1.29 eV and 2.5×10 15 s −1 for peak 3; 1.57 eV and 7.0×10 17 s −1 for peak 4; and 1.95 eV and 1.8×10 21 s −1 for peak 5. The results match well with the reported values within the discrepancies usually expected for such studies. The results are presented and discussed.
Databáze: OpenAIRE