Thermoluminescence Glow Curve Deconvolution and Kinetic Parameters determination of Samarium Doped Lithium borosilicate glass.

Thermoluminescence glow curves of gamma-irradiated Samarium doped lithium borosilicate glass were investigated. The number of overlapping peaks is determined using the Repeated Initial Rise (RIR) method. The glow curves were deconvoluted into four overlapping peaks. The trapping parameters such as activation energy E, frequency factor (s), and kinetic order (b) for each peak are determined. The obtained results indicated that the Lithium borosilicate glass doped with Samarium has four electron trap levels with the average activation energies of 0.82,1.01,1.21, and 1.31eV, respectively. Thermal fading analysis of the individual peaks based on the deconvolution data is performed. The obtained results showed high thermal fading of the first peak while high thermal stability of the second and third peaks compared with the other peaks. These results could be used to explain some observed properties such as high thermal fading and light sensitivity for such thermoluminescence material. Moreover, the obtained results may be helpful to minimize the fading corrections in the dosimetric applications.