不同基底氘钛靶性能研究  

Study on Property of Deuterium Titanium Target with Different Bases

作　　者：李炎锟 陈红涛[1] 宋应民[1] 孙琪 胡因球 张坤 龚新宝 刘邢宇 LI Yankun;CHEN Hongtao;SONG Yingmin;SUN Qi;HU Yinqiu;ZHANG Kun;GONG Xinbao;LIU Xingyu(China Institute of Atomic Energy,Beijing 102413,China)

机构地区：[1]中国原子能科学研究院,北京102413

出　　处：《原子能科学技术》2024年第7期1548-1556,共9页Atomic Energy Science and Technology

基　　金：中核集团集中研发项目。

摘　　要：中子发生器的靶片性能影响中子产额和稳定性。为防止钛膜和基底材料间生成合金,进而影响靶片性能,本研究在氘钛靶储氢层与基底层之间采用了镀金工艺,以阻止钛膜和靶片的基底材料相互渗透,进而影响钛膜中钛元素浓度,造成靶上有效氘浓度降低。经过对比测试,钼基底镀金氘钛靶的中子产额可达到1.61×10^(9)s^(−1),在束流强度一定的条件下,其中子产额及稳定性优于铜基底镀金氘钛靶和纯钼基底氘钛靶。电子显微镜能谱分析显示,钼基底镀金氘钛靶中钛元素丰度最高,成功解释了其中子产额较高的原因。同时模拟计算排除了实验中靶片温度上升对靶中氘溢出的影响。此研究为理解和优化中子发生器提供了有价值的见解。The effective performance of target materials within neutron generators is pivotal in determining neutron yield and ensuring system stability.This research investigates the adverse effects that arise from the formation of intermetallic alloys between titanium films and bases in deuterium titanium targets,a prevalent issue that causes substantial degradation in target performance.Aiming to address and counter this challenge,the study introduced an innovative gold-plated technique.The goldplated was meticulously applied to serve as a barrier between the hydrogen storage layer and the base material of the target.This method was executed to intercept the diffusive processes that could lead to deleterious alloying between the titanium film and the base.The successful application of this technique is paramount in maintaining the integrity and concentration of titanium elements within the coating and,crucially,in protecting the active deuterium nuclei that are essential for effective neutron generation.The investigation proceeded with rigorous comparative analyses conducted under specific beam conditions to evaluate the efficacy of the molybdenum base gold-plated deuterium titanium targets against other materials.The findings are clear and significant and the molybdenum base gold-plated deuterium titanium target demonstrates a superior neutron output with a yield of 1.61×10^(9)s^(−1),outstandingly surpassing that of both the copper base gold-plated and pure molybdenum base deuterium titanium targets.The integrity of these results was further consolidated through meticulous electron microscope spectral analysis.This analysis confirms the enriched presence of titanium in the molybdenum base gold-plated deuterium titanium target,which helps explain the observed increase in neutron yield.Moreover,detailed computational simulations were employed to discern any possible influence of temperature on deuterium retention within the target.The simulation leads to the exclusion of temperature rise as a contributory factor for de

关 键 词：氘钛靶 镀金 基底 中子产额 中子产额稳定性 

分 类 号：TL51[核科学技术—核技术及应用]