Thermoluminescence of Fluoridated Hydroxyapatite Prepared from Ώ and ΐ-Tricalucium Bis (Orthophosphate)
Kiyoko SAKAMOTO, Kazuno MIZUGUCHI, Shunro YAMAGUCHI and Atsushi NAKAHIRA
Abstract:The thermoluminescence characteristics of fluoridated hydroxyapatite (FHAp) having various fluoride contents have been investigated. The FHAp samples were prepared from reaction of Ώ or ΐ- tricalcium Bis (orthophosphate) (Ώ-TCP or ΐ- TCP) with NH4F. TL peaks of FHAp heated at 700 were observed at 90and 190, and the 90 peak was higher than the 190 peak. The TL peak intensity increased with the fluoride contents in FHAp. The TL peak intensity of FHAp from Ώ-TCP was higher than that from ΐ-TCP. The intensity of TL peak increased linearly up to about 1.8 C / kg for X-ray irradiation. Key Words:hermoluminescence, Fluoridated Hydroxyapatite (FHAp), Ώ and ΐ-Tricalucium Bis (Orthophosphate) (Ώ and ΐ-TCP) Radiation