Majgier Renata, Rääf Christopher L, Mandowski Arkadiusz, Bernhardsson Christian
Institute of Physics, Faculty of Mathematics and Natural Sciences, Jan Dlugosz University, ul. Armii Krajowej 13/15, Częstochowa, Poland.
Medical Radiation Physics, Department of Translational Medicine, Lund University, Skåne University Hospital, Malmö, Sweden.
Radiat Prot Dosimetry. 2019 Jul 1;184(1):90-97. doi: 10.1093/rpd/ncy189.
The aim of this work was to investigate the optically-stimulated luminescence (OSL) properties of potassium chloride (KCl) and its potential use in radiation dosimetry. The optimal condition for OSL readout with blue light stimulation were designated using a commercially available Risø TL/OSL reader. KCl was studied in three sample forms: crystals, powder and pellets. The following OSL characteristics were determined: signal reproducibility, OSL measurement-induced sensitivity changes, temperature dependence of OSL and signal stability over time. The results show a high reproducibility of KCl samples and strong sensitivity changes, which can be corrected for by using a test-dose. The long-term OSL studies confirmed the occurrence of both inverse fading and fading phenomena in KCl. In addition, a comparison with corresponding measurements using sodium chloride (NaCl) were carried out. Although it was confirmed that NaCl is more suitable for dosimetry, there might be benefits of combining NaCl with KCl for more accurate absorbed dose determinations.
这项工作的目的是研究氯化钾（KCl）的光激发发光（OSL）特性及其在辐射剂量测定中的潜在用途。使用市售的Risø TL/OSL读数器确定了蓝光刺激下OSL读出的最佳条件。对KCl的三种样品形式进行了研究：晶体、粉末和颗粒。测定了以下OSL特性：信号再现性、OSL测量引起的灵敏度变化、OSL的温度依赖性以及信号随时间的稳定性。结果表明，KCl样品具有高再现性和强烈的灵敏度变化，可通过使用测试剂量进行校正。长期的OSL研究证实了KCl中存在反向衰减和衰减现象。此外，还与使用氯化钠（NaCl）的相应测量进行了比较。尽管已证实NaCl更适合用于剂量测定，但将NaCl与KCl结合使用可能有利于更准确地确定吸收剂量。
