Thermoluminescence properties of gamma‐irradiated nano‐structure hydroxyapatite

Abstract

The suitability of nano-structured hydroxyapatite (HAP) for use as a thermoluminescence dosimeter was investigated. HAP samples were synthesized using a hydrolysis method. The formation of nanoparticles was confirmed by X-ray diffraction and average particle size was estimated to be ~30 nm. The glow curve exhibited a peak centered at around 200 °C. The additive dose method was applied and this showed that the thermoluminescence (TL) glow curves follow first-order kinetics due to the non-shifting nature of Tm after different doses. The numbers of overlapping peaks and related kinetic parameters were identified from Tm -Tstop through computerized glow curve deconvolution methods. The dependence of the TL responses on radiation dose was studied and a linear dose response up to 1000 Gy was observed for the samples.

Thermoluminescence dose–response of synthesized and doped hydroxyapatite: effect of formed crystal phases

“…[88][89][90] FOM was also obtained as less than 3.0% for the deconvoluted glow curves, which meant that the fits were good. [21,91,92] Figures 18 and 19 show the deconvolution graphs of two optimal samples.…”

“…[ 2,3,18,19 ] HAP has excellent importance in potential medical applications due to its characteristics such as biocompatibility, and bioactivity and flexible structure. [ 4,20,21 ] It is also used as an implant in hard tissue replacement and for manufacturing prostheses to compensate the various types of defects. Due to the high adsorption, it is used as an absorbent and identifier of toxic compounds and metals in water.…”

Rare-earth (Gd3+,Yb3+/Tm3+, Eu3+) co-doped hydroxyapatite as magnetic, up-conversion and down-conversion materials for multimodal imaging

“…As far as individual studies on doping CP with luminescent ions are concerned, they will be briefly reviewed here. For instance, it was demonstrated that HAp:Gd 3+ nanoparticles obtained through hydrothermal processing exhibit a strongly linear dependence of luminescence responses on the radiation dose of gamma rays due to which they could be used in thermoluminescence dosimetry 27 . Similarly, 159 Gd-doped HAp nanorods synthesized as a carrier for radioisotopes were suitable for the detection and treatment of osteosarcoma using magnetic resonance imaging and production of 159 Gd-32 P-HAp caused by neutron activation 28 .…”