This work reports on a radiochromic dosimeter for dose distribution measurement after irradiation with UV light. The dosimeter is composed of a 25 % copolymer of poly(ethylene oxide)-block-poly(propylene oxide)-block-poly(ethylene oxide) (Pluronic F-127) that forms a physical gel matrix. The matrix is infused with leuco crystal violet (LCV, 2 mM), 4-(1,1,3,3-tetramethylbutyl)phenyl-polyethylene glycol (Triton X-100, 4 mM) and trichloroacetic acid (TCAA, 17 mM). This dosimeter was exposed to UVA, UVB and UVC radiation and the radiochromic reactions were followed with reflectance spectrophotometry and Raman spectroscopy. Exposition of the dosimeter to all UV light subranges caused LCV to convert to CV molecules absorbing visible light and affecting the dosimeter that changes colour to blue. The intensity of colour was related to absorbed UV dose. The dosimeter is the least sensitive to irradiation with UVA and the most sensitive to irradiation with UVB. The main dose-response characteristics of the dosimeter were obtained: threshold dose, linear and dynamic dose range, dose sensitivity as well as the stability over time after irradiation and stability of recorded dose distribution. Overall, the dosimeter coupled with reflectance spectrophotometry is effective in measuring doses in 1D, whereas using 3D optical scanning techniques should expand its application to 3D dosimetry. This work also provides an approach to using the LCV-Pluronic F-127 dosimeter for measurements of 2D dose distribution with a flat-bed optical scanner as a readout method. LCV-Pluronic F-127 may also be useful for solar radiation measurements.

这项工作报告了放射性变色剂量计，用于在紫外线照射后进行剂量分布测量。剂量计由聚25％的共聚物（环氧乙烷）的-嵌段-聚（环氧丙烷） -嵌段-形成物理凝胶基质的聚环氧乙烷（Pluronic F-127）。基质中注入无色结晶紫（LCV，2 mM），4-（1,1,3,3-四甲基丁基）苯基-聚乙二醇（Triton X-100，4 mM）和三氯乙酸（TCAA，17 mM） 。将该剂量计暴露于UVA，UVB和UVC辐射下，然后通过反射分光光度法和拉曼光谱法对放射性变色反应进行跟踪。剂量计暴露于所有紫外光子范围会使LCV转换为吸收可见光的CV分子，并影响将颜色变为蓝色的剂量计。颜色的强度与吸收的紫外线剂量有关。剂量计对UVA照射最不敏感，而对UVB照射最敏感。获得了剂量计的主要剂量反应特征：阈剂量，线性和动态剂量范围，剂量敏感性以及辐照后随时间的稳定性以及记录的剂量分布的稳定性。总体而言，剂量计结合反射分光光度法可有效测量1D剂量，而使用3D光学扫描技术应将其扩展到3D剂量学中。这项工作还提供了一种使用LCV-Pluronic F-127剂量计通过平板光学扫描仪测量2D剂量分布的方法，作为一种读出方法。LCV-Pluronic F-127也可用于太阳辐射测量。而使用3D光学扫描技术应将其应用扩展到3D剂量测定。这项工作还提供了一种使用LCV-Pluronic F-127剂量计通过平板光学扫描仪测量2D剂量分布的方法，作为一种读出方法。LCV-Pluronic F-127也可用于太阳辐射测量。而使用3D光学扫描技术应将其应用扩展到3D剂量测定。这项工作还提供了一种使用LCV-Pluronic F-127剂量计通过平板光学扫描仪测量2D剂量分布的方法，作为一种读出方法。LCV-Pluronic F-127也可用于太阳辐射测量。