Hajiloo N, Ziaie F, Mehtieva S I
Agricultural, Medical and Industrial Research School, Nuclear Science and Technology Research Institute, PO Box 31485-498, Karaj, Iran.
Radiat Prot Dosimetry. 2012 Mar;148(4):487-91. doi: 10.1093/rpd/ncr204. Epub 2011 May 7.
In this paper, the gamma-irradiated EPR responses of hydroxyapatite (HAP) samples were investigated from a dosimetric point of view. For this purpose, nano-structure hydroxyapatite was synthesised via a hydrolysis method. A portion of the produced powder was annealed at 600 °C for 4 h. All the samples were irradiated under the (60)Co gamma-ray source at different absorbed doses from 0.1 to 45 kGy. EPR signal intensities of HAP samples were measured at room temperature in air. Subsequently, the EPR signal intensities were constructed as a function of radiation dose and were compared with the results of bone powder samples. The results show that the EPR responses of non-annealed HAP samples are higher than others for several times.
本文从剂量学角度研究了羟基磷灰石（HAP）样品的γ辐照电子顺磁共振（EPR）响应。为此，通过水解法合成了纳米结构的羟基磷灰石。将一部分制备的粉末在600℃下退火4小时。所有样品在（60）Coγ射线源下以0.1至45 kGy的不同吸收剂量进行辐照。在室温空气中测量HAP样品的EPR信号强度。随后，将EPR信号强度构建为辐射剂量的函数，并与骨粉样品的结果进行比较。结果表明，未退火的HAP样品的EPR响应比其他样品高几倍。
