质子束水量热计中量热芯的超纯水制备与预辐照  

Preparation of Ultrapure Water and Preirradiation of Calorimetric Core for Proton Beam Based on Thermistor

作　　者：王菲菲 高飞[1] 丁雨阳 王子业 董璐琪 王靖谦 刘蕴韬[1] WANG Feifei;GAO Fei;DING Yuyang;WANG Ziye;DONG Luqi;WANG Jingqian;LIU Yuntao(China Institute of Atomic Energy,National Key Laboratory for Metrology and Calibration Techniques,China National Nuclear Corporation Key Laboratory of Metrology and Testing Technology,Beijing 102413,China)

机构地区：[1]中国原子能科学研究院计量与校准技术重点实验室中核核工业计量与测试技术重点实验室,北京102413

出　　处：《同位素》2024年第1期36-41,共6页Journal of Isotopes

摘　　要：针对质子束的水吸收剂量绝对测量中化学热缺陷的修正问题,本研究基于热敏电阻研制水量热计,并进行气体饱和超纯水系统的设计。通过向量热芯内的超纯水充入高纯气体形成饱和状态,最大程度减少辐射化学反应的产额。在量热芯封装后通过预辐照,使量热芯超纯水中O2充分发生辐解反应,使量热芯内水环境达到无热损的稳定状态,成功研制了稳定的零热损水量热计,减少了量热芯热损对水吸收剂量绝对测量结果的影响,可为后续水吸收剂量的绝对测量提供技术支持。A water calorimeter based on thermistor is developed in this paper,and for the correction of chemical thermal defects in the absolute measurement of absorbed dose to water from proton beam,the design of gas saturated ultrapure water system is completed.By filling the ultrapure water inside the calorimeter core with high purity gas to form saturation condition,the effect of radiation chemical reaction is minimized.And the irradiation reaction of O 2 in the ultrapure water is fully occurred through pre-irradiation experiment after the encapsulation of the calorimeter core,so that the water environment inside reaches a stable state without heat loss,which successfully developed a stable zero heat loss water calorimeter and the influence of heat loss on the absolute measurement of absorbed dose to water is minimized,which provides an important basis for the subsequent absolute measurement of absorbed dose to water.

关 键 词：水量热计 鼓泡实验 绝对测量 热损失 水吸收剂量 

分 类 号：TL84[核科学技术—核技术及应用]