为了保障钍基熔盐堆核能系统(Thorium Molten Salt Reactor Nuclear Energy System, TMSR)项目的实验安全运行,需要构建一套实验室安全监控系统,该系统需要解决以下问题:实验室地域覆盖广、环境差异大、信号种类繁多、软件接口复杂。现...为了保障钍基熔盐堆核能系统(Thorium Molten Salt Reactor Nuclear Energy System, TMSR)项目的实验安全运行,需要构建一套实验室安全监控系统,该系统需要解决以下问题:实验室地域覆盖广、环境差异大、信号种类繁多、软件接口复杂。现有的商业监控系统很难满足以上需求,因此开发了一套基于Node-Web技术的实验室安全监控系统。展示了该系统的结构框架,并阐述了基于视频接口进行软件开发的流程。该系统实现了EPICS(ExperimentalPhysicsandIndustrialControlSystem)信号采集系统和海康威视(Hikvsion)视频采集系统的集成,通过Node-Web前端可视化接口的开发,实现了监测界面中EPICS变量和视频流联动的功能。系统具有分布式、网络化、扩展性好、低成本的特点,可适用于建设大型科研机构实验室安全监控系统。展开更多
对于液态燃料熔盐堆而言,核石墨的浸渗问题非常重要,关系反应堆运行安全性。因此,对核石墨的熔盐浸渗的研究必不可少。核石墨是多孔材料,其孔结构决定了其浸渗特性。本研究主要针对中国科学院上海应用物理研究所的液态燃料熔盐堆项目—...对于液态燃料熔盐堆而言,核石墨的浸渗问题非常重要,关系反应堆运行安全性。因此,对核石墨的熔盐浸渗的研究必不可少。核石墨是多孔材料,其孔结构决定了其浸渗特性。本研究主要针对中国科学院上海应用物理研究所的液态燃料熔盐堆项目——钍基熔盐堆核能系统(Thorium-based Molten Salt Reactor,TMSR)而开展。利用光学显微镜、压汞仪以及真密度仪研究分析了4种具有代表性的核石墨的孔结构,并利用高压反应釜研究了它们在不同压强下的熔盐(氟化盐,650°C)浸渗特性。结果表明,不同核石墨的孔结构具有明显差异;核石墨的熔盐浸渗与压汞浸渗相似;石墨的孔结构(如入孔孔径、开孔率等)决定了一定压强下石墨是否会发生熔盐浸渗以及浸渗量的多少。展开更多
Monte Carlo simulation is used to study the low energy He ion channelling in a (17, 0) single-wall nanotube and its rope. The simulation shows that the channelling critical angle ψc = 48E^-1/2 (E is incident energ...Monte Carlo simulation is used to study the low energy He ion channelling in a (17, 0) single-wall nanotube and its rope. The simulation shows that the channelling critical angle ψc = 48E^-1/2 (E is incident energy) for a 1.31-nm-diameter initial beam into the nanotube, while ψc = 45E^-1/2 for the 1.31-nm-diameter initial beam into its rope.展开更多
The magnetism of highly oriented pyrolytic graphite (HOPG) induced by ion implantation is investigated with electron spin resonance (ESR) spectroscopy and magnetization measurements. The results indicate that the ...The magnetism of highly oriented pyrolytic graphite (HOPG) induced by ion implantation is investigated with electron spin resonance (ESR) spectroscopy and magnetization measurements. The results indicate that the ESR spectra of the HOPG sample correlate with ion species, incident energy and dose of implantation. The correlation of the ESR spectra and magnetism of the HOPG sample with :2C+ ion implantation and H+ ion implantation are studied in detail. The ferromagnetism of the HOPG sample is likely related to the asymmetric L1 line, which may be attributed to the interaction between localized defects and itinerant electrons occupied in the 'impurity' band induced by ion implantation.展开更多
文摘为了保障钍基熔盐堆核能系统(Thorium Molten Salt Reactor Nuclear Energy System, TMSR)项目的实验安全运行,需要构建一套实验室安全监控系统,该系统需要解决以下问题:实验室地域覆盖广、环境差异大、信号种类繁多、软件接口复杂。现有的商业监控系统很难满足以上需求,因此开发了一套基于Node-Web技术的实验室安全监控系统。展示了该系统的结构框架,并阐述了基于视频接口进行软件开发的流程。该系统实现了EPICS(ExperimentalPhysicsandIndustrialControlSystem)信号采集系统和海康威视(Hikvsion)视频采集系统的集成,通过Node-Web前端可视化接口的开发,实现了监测界面中EPICS变量和视频流联动的功能。系统具有分布式、网络化、扩展性好、低成本的特点,可适用于建设大型科研机构实验室安全监控系统。
文摘对于液态燃料熔盐堆而言,核石墨的浸渗问题非常重要,关系反应堆运行安全性。因此,对核石墨的熔盐浸渗的研究必不可少。核石墨是多孔材料,其孔结构决定了其浸渗特性。本研究主要针对中国科学院上海应用物理研究所的液态燃料熔盐堆项目——钍基熔盐堆核能系统(Thorium-based Molten Salt Reactor,TMSR)而开展。利用光学显微镜、压汞仪以及真密度仪研究分析了4种具有代表性的核石墨的孔结构,并利用高压反应釜研究了它们在不同压强下的熔盐(氟化盐,650°C)浸渗特性。结果表明,不同核石墨的孔结构具有明显差异;核石墨的熔盐浸渗与压汞浸渗相似;石墨的孔结构(如入孔孔径、开孔率等)决定了一定压强下石墨是否会发生熔盐浸渗以及浸渗量的多少。
文摘Monte Carlo simulation is used to study the low energy He ion channelling in a (17, 0) single-wall nanotube and its rope. The simulation shows that the channelling critical angle ψc = 48E^-1/2 (E is incident energy) for a 1.31-nm-diameter initial beam into the nanotube, while ψc = 45E^-1/2 for the 1.31-nm-diameter initial beam into its rope.
基金Supported by the Research Foundation for Young Scientist in Shandong Province under Grant No BS2013CL043
文摘The magnetism of highly oriented pyrolytic graphite (HOPG) induced by ion implantation is investigated with electron spin resonance (ESR) spectroscopy and magnetization measurements. The results indicate that the ESR spectra of the HOPG sample correlate with ion species, incident energy and dose of implantation. The correlation of the ESR spectra and magnetism of the HOPG sample with :2C+ ion implantation and H+ ion implantation are studied in detail. The ferromagnetism of the HOPG sample is likely related to the asymmetric L1 line, which may be attributed to the interaction between localized defects and itinerant electrons occupied in the 'impurity' band induced by ion implantation.