Tuner Hasan, Trompier François, Romanyukha Alexander
Department of Physics, Faculty of Science and Letters, Balikesir University, Turkey.
Institut de Radioprotection et de Sûreté Nucléaire (IRSN), Fontenay-aux-Roses, France.
Appl Radiat Isot. 2025 Mar;217:111640. doi: 10.1016/j.apradiso.2024.111640. Epub 2024 Dec 15.
This paper presents the results of the first intercomparison exercise on Electron Paramagnetic Resonance (EPR) dosimetry using sorbitol, where the performance parameters of sorbitol as dosimetric material were evaluated by three independent participants. Each participant was asked to determine a calibration curve using a set of sorbitol powder samples irradiated to four different doses (1.00, 2.50, 5.00, and 10.00 Gy of air kerma). The calibration doses were known to the participants, who were asked to measure each sample three times, and to report the EPR signal response, the mass of aliquots measured, and the parameters of EPR signal acquisition and signal evaluation. Critical dose and detection limit were calculated based on the calibration-curve parameters obtained by each participant. The mean values of the detection limit and average critical dose were found to be 802 ± 148 mGy and 411 ± 77 mGy, respectively. These values were compared with those of for alanine, glass and tooth enamel. The participants were also provided with four blind samples irradiated to four unknown doses, and their reported doses were compared with the delivered doses and performance quotient was calculated for each participant. The findings indicate that sorbitol is a promising candidate for accidental and retrospective dosimetry.
本文介绍了首次使用山梨醇进行电子顺磁共振（EPR）剂量测定比对实验的结果，其中三位独立参与者对山梨醇作为剂量测定材料的性能参数进行了评估。要求每位参与者使用一组经四种不同剂量（空气比释动能分别为1.00、2.50、5.00和10.00 Gy）辐照的山梨醇粉末样品确定一条校准曲线。参与者已知校准剂量，要求他们对每个样品测量三次，并报告EPR信号响应、所测等分试样的质量以及EPR信号采集和信号评估的参数。根据每位参与者获得的校准曲线参数计算临界剂量和检测限。发现检测限和平均临界剂量的平均值分别为802±148 mGy和411±77 mGy。将这些值与丙氨酸、玻璃和牙釉质的值进行了比较。还为参与者提供了四个经四种未知剂量辐照的盲样，并将他们报告的剂量与所给予的剂量进行比较，并为每位参与者计算性能商数。研究结果表明，山梨醇是用于意外和回顾性剂量测定的一个有前景的候选材料。
