117 Journal of Nuclear Physics, Material Sciences, Radiation and Applications Vol-4, No-1, August 2016 pp. 117–128 DOI: 10.15415/jnp.2016.41012 Thermal Effect on TL Response of Single Doped LiF+NaF:RE Polycrystalline Phosphors E. GÓMEZ-CHAYRES 1 , E. CRUZ-ZARAGOZA 2 *, M. I. GIL TOLANO 1,2 , L. PÉREZ CRUZ 1 , P. R. GONZÁLEZ 3 , M. C. SALCEDO LUNA 4 1 Posgrado en Ciencias Químicas, Facultad de Química, Universidad Nacional Autónoma de México, Av. Universidad 3000, 04510 Ciudad de México, México. 2 Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, A.P. 70543, 04510 Ciudad de México, México. 3 Instituto Nacional de Investigaciones Nucleares, Carretera México-Toluca S/N, 52750 Ocoyoacac, Estado de México, México. 4 Unidad de Servicios de Apoyo a la Investigación, Facultad de Química, Universidad Nacional Autónoma de México, Av. Universidad 3000, 04510 Ciudad de México, México. * Email: ecruz@nucleares.unam.mx Published online: August 08, 2016, The Author(s) 2016. This article is published with open access at www.chitkara.edu.in/publications Abstract In this work, the sintering and annealing effects on the thermoluminescent (TL) behavior of undoped and rare earth (RE)-doped LiF+NaF powder samples (RE = Ce 3+ , Eu 3+ , Lu 3+ or Tl + , at 0.5 mol%) was analyzed by evaluating the sensitivity to gamma radiation and TL response of the material. The polycrystalline samples were obtained by solid state reaction at 1000°C. The samples were irradiated in a Gammacell-3000 Elan irradiator loaded with 137 Cs sources. The glow curves of the LiF+NaF doped with lutetium or thallium show an intense glow peak at about 175°C and 135°C, respectively. When the phosphor was doped with cerium or europium the glow curves were complex in their structure, with TL peaks observed at 155°C and 165°C, respectively. The linear dose-response was between 10 and 50 Gy for cerium, europium or lutetium doped LiF+NaF samples, while for the thallium doped and undoped samples such intervals were 10-100 Gy and 10-500 Gy, respectively. Because the shape of the glow curves were complex, the analysis was carried out in (i) samples without a sintering treatment where the TL response was found insensitive to pre-irradiation annealing treatment, and (ii) sintered samples (300, 350, 400 or 500 °C), in this last case the TL response was dependent on the annealing temperature (100-400 °C), finally (iii) the kinetics parameters of the glow curves were analyzed by assuming a general