Wahib Norfadira Binti, Khandaker Mayeen Uddin, Aqilah Binti Mohamad Ramli Nur, Sani S F Abdul, Bradley D A
Department of Physics, University of Malaya, 50603, Kuala Lumpur, Malaysia; Centre for Biomedical Physics, School of Healthcare and Medical Sciences, Sunway University, 47500, Bandar Sunway, Selangor, Malaysia.
Department of Physics, University of Malaya, 50603, Kuala Lumpur, Malaysia; Centre for Biomedical Physics, School of Healthcare and Medical Sciences, Sunway University, 47500, Bandar Sunway, Selangor, Malaysia.
Appl Radiat Isot. 2019 Jun;148:218-224. doi: 10.1016/j.apradiso.2019.04.001. Epub 2019 Apr 7.
Study has been made of the thermoluminescence (TL) yield of various glass-based commercial kitchenware (Reko-China, Skoja-France, Godis-China, Glass Tum-Malaysia, Lodrat-France). Interest focuses on their potential for retrospective dosimetry. Use was made of aCo gamma-ray irradiator, delivering doses in the range 2-10 Gy. Results for the various media show all the glassware brands to yield linearity of response against dose, with a lower limit of detection of ∼0.06 and ∼0.08 Gy for loose and compact powdered samples. Among all of the brands under study, the Lodrat glassware provides the greatest sensitivity, at 6.0 E+02 nC g Gy and 1.5E+03 nC g Gy for compact- and loose-powdered forms respectively. This is sufficiently sensitive to allow its use as a TL material for accident dosimetry (2 Gy being the threshold dose for the onset of a number of deterministic biological effects, including skin erythema and sterility). Energy Dispersive X-ray (EDX) analyses have been conducted, showing the presence of a number of impurities (including C, O, Na, Mg, Al, Si, Ca and Br). Fading of the irradiated glasses show the amount of better than 3% and 5% of the stored energy for both loose and compact powdered samples within 9 days post irradiation. As such, commercial kitchenware glass has the potential to act as relatively good TL material for gamma radiation dosimetry at accident levels. This is the first endeavour reporting the TL properties of low cost commercial kitchenware glasses for gamma-ray doses in the few Gy range, literature existing for doses from 8 Gy to 200 Gy.
对各种玻璃材质的商用厨具（中国的Reko、法国的Skoja、中国的Godis、马来西亚的Glass Tum、法国的Lodrat）的热释光（TL）产量进行了研究。研究重点在于它们用于回顾性剂量测定的潜力。使用了钴伽马射线辐照器，剂量范围为2 - 10 Gy。各种介质的结果表明，所有玻璃器皿品牌的响应与剂量呈线性关系，对于松散和致密粉末样品，检测下限分别约为0.06和0.08 Gy。在所研究的所有品牌中，Lodrat玻璃器皿的灵敏度最高，致密和松散粉末形式的灵敏度分别为6.0 E + 02 nC g Gy和1.5 E + 03 nC g Gy。这一灵敏度足以使其用作事故剂量测定的热释光材料（2 Gy是包括皮肤红斑和不育在内的多种确定性生物效应开始出现的阈值剂量）。进行了能量色散X射线（EDX）分析，结果表明存在多种杂质（包括C、O、Na、Mg、Al、Si、Ca和Br）。辐照后玻璃的衰退情况表明，对于松散和致密粉末样品，在辐照后9天内，存储能量的衰减量分别优于3%和5%。因此，商用厨具玻璃有可能作为事故水平伽马辐射剂量测定的相对良好的热释光材料。这是首次报道低成本商用厨具玻璃在几Gy范围内伽马射线剂量下的热释光特性的研究，此前文献报道的剂量范围为8 Gy至200 Gy。
