title: Thermoluminescent characteristics of synthetic hydroxyapatite (SHAp).
abstract: This paper presents the experimental results of the thermoluminescent (TL) characteristics of synthetic hydroxyapatite (SHAp) obtained by the sol-gel method. For preparation of the SHAp powders, phosphorus pentoxide (P2O5) and calcium nitrate tetrahydrated (Ca(NO3)2-4H2O) were used. The powders obtained were submitted at different temperatures. The structural and morphological characterization were carried out using X-ray diffraction (XRD) and scanning electron microscopy techniques. TL glow curve exhibited two peaks centered at around 200 °C and 300 °C. TL response of SHAp as a function of gamma absorbed dose was linear over a wide dose range. Fading of the storage information in the samples irradiated was also studied. The experimental results show that the synthetic hydroxyapatite obtained by the sol-gel method may have used in gamma radiation dosimetry applications.
authors.affiliation: Centro de Investigación en Ciencia Aplicada y Tecnología Avanzada-Legaria, IPN. Av. Legaria 694, México D.F, Mexico.
authors.forename: R
authors.initials: R
authors.lastname: Alvarez
authors.forename: T
authors.initials: T
authors.lastname: Rivera
authors.forename: J
authors.initials: J
authors.lastname: Guzman
authors.forename: M C
authors.initials: MC
authors.lastname: Piña-Barba
authors.forename: J
authors.initials: J
authors.lastname: Azorin
keywords: Gamma irradiation; Sol–gel method; Synthetic hydroxyapatite; Thermoluminescence