Results 41 to 50 of about 13,184 (50)
Nuclear Energy and Technology, 2015 Different fuel element bundle models used to calculate the coolant and fuel cladding temperatures inside fuel assemblies have been analyzed as applied to sodium-cooled fast-neutron reactors. The drawbacks of the existing models have been identified.
B.B. Tikhomirov, V.M. Poplavsky
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Nuclear Engineering and TechnologyIn the present study, a comprehensive dataset of dose coefficients for idealized external electron exposures has been established using the newly released ICRP-156 pediatric mesh-type reference computational phantoms (MRCPs) in conjunction with the ...
Chansoo Choi +5 more
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Effect of Cs-Ion on the corrosion properties of implant materials
Nuclear Engineering and TechnologyTi-6Al-4V alloy produced by additive manufacturing method and Ti-6Al-4V alloy coated with BN ceramic were analyzed in SRIM/TRIM Monte Carlo Simulation program at 662 keV energy using parameters such as displacement, ionization and phonon, which provide ...
Murat Bi̇len +4 more
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Nuclear Engineering and TechnologySeismic isolation in nuclear power plant (NPP) buildings has been infrequently applied using a rubber-based horizontal seismic isolation system (SIS) without vertical isolation under a peak ground acceleration (PGA) of 0.3 g as the seismic design ...
Jae-Hong Kim +3 more
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Nuclear Engineering and TechnologyTo address the challenges of feature extraction and low classification accuracy in low-count, low-resolution gamma spectra with emerging nuclide identification methods, we proposed a novel approach using a two-dimensional convolutional bidirectional long
Shu-Xin Zeng +7 more
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He jishu硼中子俘获治疗（Boron Neutron Capture Therapy，BNCT）是一种新兴的放射治疗技术，而呼吸运动是BNCT治疗肺癌影响剂量准确度的关键问题。为了量化呼吸运动对BNCT治疗肺癌的剂量学影响，采用蒙特卡罗模拟方法构建肺癌治疗中肿瘤及器官随呼吸运动时空变化的动态模型，并开展BNCT蒙特卡罗剂量计算。本文基于多功能数智化蒙特卡罗程序平台（Multi-function and Generalized Intelligent Code-bench based on Monte Carlo ...
朱 琳 +9 more
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He jishu大部分用于辐射剂量学研究的辐照器都安装比活度较高的放射源，这类放射源只能采用合规的容器运输以完成现场装源。为了使国产辐照器能够更好地符合国内外放射源的运输及安装要求，研制了一种新型三重屏蔽辐照器，用于进行现场装源及开展后续工作。首先基于对辐照器的精确构建，开展了系统的模拟计算，分析了辐照器对射束的控制特性。然后结合模拟计算和分析，研究了开展辐射剂量学相关研究所关心的辐射场性能。本工作研制的新型三重屏蔽辐照器适用于现场装源，散射腔能够将射束中的散射成分减少25 ...
金 孙均 +13 more
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He jishu为研究压水堆一回路堆芯污垢中放射性物质的产量和分布情况，以典型压水堆（Pressurized Water Reactor，PWR）一回路为研究对象，针对一回路中的放射性物质，建立了污垢沉积及放射性物质的产量分布预测模型。模型对污垢沉积和放射性物质的预测结果与污垢仿真程序CRUDSIM（Chalk River Unidentified Deposits SIMulation）的计算结果差异小于5%。在此基础上，分析了冷却剂流速、氢气含量和冷却剂入口温度的影响。结果表明 ...
王 世伟 +3 more
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He jishu氧化钒（Vanadium Oxide，VOx）探测器对红外辐射敏感，尤其是在长波红外（Long-Wave Infrared，LWIR）波段，具有高灵敏度、低噪声、非制冷及成本效益显著等优势，在空间成像探测中发挥着重要作用。然而，空间辐射对VOx的成像质量和可靠性会产生严重影响。为填补当前VOx探测器辐射效应研究的不足，开展了地面辐射模拟试验，并对探测器辐射损伤进行了分析。采用在线与离线试验测试方法，系统研究了不同剂量下探测器输出变化。结合退火试验，探究了空间辐射对探测器性能退化规律。结果表明 ...
银 鸿 +9 more
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