基于多芳氨基甲烷类化合物的变色薄膜制备及其电子辐照剂量学研究  

Preparation of radiochromic films based on a triarylanino methane compound and corresponding research on electron irradiation dosimetry

作　　者：徐雪春[1,2] 魏昇[1] 辛勇[1] 李翠红[1] 李欢[1] 林理彬[2] 

机构地区：[1]南昌大学理学院,南昌330031 [2]四川大学辐射物理与技术教育部重点实验室,成都610064

出　　处：《核技术》2014年第2期27-30,共4页Nuclear Techniques

基　　金：国家自然科学基金(10275056)资助

摘　　要：以多芳氨基甲烷类化合物和乙烯醇缩聚物为原料制备了固体薄膜,经电子束辐照后,由无色透明逐渐变为绿色。紫外-可见吸收光谱表明其主吸收峰位于626 nm处,吸光度响应与辐照剂量在5–50 kGy范围内近似呈线性关系。同时还研究了电子能量、剂量率、分次辐照、后辐照效应和辐照温度等因素对薄膜剂量响应的影响。Background： In recent years, radiochromic films have been widely used as dosimeters for industrial and medical applications. Purpose： In order to obtain the irradiation features ofa radiochromic film that might be used as film dosimeter for electron accelerator, radiochromic films containing a triarylamino methane compotmd were prepared. Methods： The radiochromic films were irradiated by electron beams under various conditions, such as total dose, electron energy, dose rate, fracture irradiation and temperature. Meanwhile the optical density of the films was analyzed with UV-Vis absorption spectrum. Results： The color of the films changed from clear to green when irradiated by electron beam. As shown by the absorption spectrum, the main absorption peak in the visual region locates around 626 nm. It is noticeable that the response of optical density has a linear relationship with radiation dose ranging from 5 kGy to 50 kGy. Moreover, electron energy, dose rate, fracture irradiation and radiation temperature present different levels of influence upon the response of radiochromie films. Furthermore, as a result of post-radiation effect, stable optical density should be measured more than 12 h after irradiation. Conclusion： The radiochromic films containing a triarylamino methane compound can be utilized to measure the dose of electron irradiation in dose range from 5 kGy to 50 kGy.

关 键 词：辐射变色 电子辐照 剂量学 

分 类 号：TL818[核科学技术—核技术及应用]