Investigation of thermoluminescence characteristics of marbles

The dosimetric characteristics of any TL material mainly depend on the sensitivity, energy response and the kinetic parameters quantitatively describing the trapping emitting centers responsible for the TL emission. Thus, a reliable dosimetric study of a thermoluminescent material should be based on a good knowledge of its kinetic parameters. Evaluation of kinetic parameters, i.e. the activation energy Ea of the traps involved in the TL emission, the kinetic order b, and the frequency factor s, associated with the glow peaks. In the given study, the additive dose (AD), variable heating rate (VHR), peak shape (PS) and computerized glow deconvolution (CGCD) methods were used to determine the kinetic parameters glow peaks of Marble(white and pink). The results of the analysis show that Marbles (white and pink) have a first order glow peak of Ea =0.56 eV at 140°C and Ea =0.55 eV at 145°C, respectively.