EPR and UV spectroscopic study of table sugar as a high-dose dosimeter
EPR and UV spectroscopic study of table sugar as a high-dose dosimeter
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DOI：
10.1016/s0969-806x(02)00210-4
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发表时间：
2002-10-01
影响因子：
2.9
通讯作者：
Georgieva, E
中科院分区：
文献类型：
--
作者：
Yordanov, ND;Gancheva, V;Georgieva, E
本文报道了一种以蔗糖为辐射敏感材料，Mn ~（2+）/MgO为内标的新型自校准剂量计，用电子顺磁共振（EPR）方法估算高能辐射吸收剂量的可能性。该剂量计的剂量响应表示为糖和Mn 2+的EPR信号强度与吸收剂量之间的比率。由于两种物质的EPR谱是同时记录的，因此研究了一些相关的仪器设置参数的影响。紫外光谱研究辐照固体糖的水溶液也进行了。在所有的溶液中，辐照的糖样品在267 nm处的一个带被记录为线性增加的强度与吸收剂量。使用辐照过的糖的水溶液的UV光谱的最小可检测剂量为100戈伊。EPR和UV光谱数据的组合可用于独立的内部或国际校准和剂量估计控制。(C)2002爱思唯尔科技有限公司。保留所有权利。
The possibilities for the estimation of the absorbed dose for high-energy radiation with a new self-calibrated dosimeter containing table sugar as a radiation-sensitive material and Mn2+/MgO as an internal standard by the method of electron paramagnetic resonance (EPR) is reported. The dose response of this dosimeter is represented as the ratio between the EPR signal intensities of sugar and Mn2+ versus absorbed dose. Because the EPR spectra of both substances are simultaneously recorded, the influence of some related instrumental setting parameters were investigated. UV spectral studies on water solutions of irradiated solid sugar were also performed. In all solutions of irradiated sugar samples a band at 267 nm was recorded as linearly increasing intensity with the absorbed dose. The minimum detectable dose using the UV spectrum of water solutions of irradiated sugar is 100 Gy. Combination of EPR and UV spectral data is possible to use for independent internal or international calibration and control of dose estimations. (C) 2002 Elsevier Science Ltd. All rights reserved.