基于茜素红S水溶液的γ射线辐射剂量计新机理的研究  

New Mechanism of Alizarin Red S Aqueous Solution as γ-ray Radiation Dosimeter

作　　者：曾嵘[1] 张伟[1] 张海黔[1] 

机构地区：[1]南京航空航天大学材料科学与技术学院,南京211106

出　　处：《科学技术与工程》2016年第16期58-63,共6页Science Technology and Engineering

基　　金：国家自然科学基金项目(11575086);江苏高校优势学科建设工程项目资助

摘　　要：^(60)Co γ射线辐照茜素红S水溶液,在吸收剂量为0~1 500 Gy茜素红S水溶液的荧光强度随着吸收剂量的增加而增加。通过对茜素红S水溶液的紫外吸收光谱,以及高斯计算等研究发现,在吸收剂量为0~1 500 Gy的条件下,荧光强度随吸收剂量的增加而上升是由于γ辐射使茜素红S分子内氢键断裂影响了茜素红S激发态分子内质子转移,抑制了茜素红S水溶液本身的荧光淬灭,从而使荧光强度增强。By ^（60）Co γ rays irradiating alizarin red S（ alizarin red S） aqueous solution,the absorbed dose range for 0 ~ 1 500 Gy,fluorescence intensity of alizarin red S aqueous solution rises with the increase of the absorbed dose. According to the study of ultraviolet absorption spectrum of alizarin red S aqueous solution and Gaussian computation,it can be concluded that under the condition of the absorbed dose range for 0 ~ 1 500 Gy,fluorescence intensity of alizarin red S aqueous solution rising with the increase of the absorbed dose is caused by the transfer of the excited- state intramolecular proton and the reducing of the fluorescence quenching of alizarin red S aqueous solution,which are the result of disrupting alizarin red S intramolecular hydrogen bonding influenced by γ radiation.

关 键 词：γ射线辐射剂量计 茜素红S 荧光 激发态分子内质子转移 

分 类 号：TL818.4[核科学技术—核技术及应用]