| 张倩影,傅楗强.基于Geant4的核孔膜生产模拟研究[J].南华大学学报(自然科学版),2024,(1):90~96.[ZHANG Qianying,FU Jianqiang.Geant4-based Simulation Study of Nuclear Track-etched Membrane Production[J].Journal of University of South China(Science and Technology),2024,(1):90~96.] |
| 基于Geant4的核孔膜生产模拟研究 |
| Geant4-based Simulation Study of Nuclear Track-etched Membrane Production |
| 投稿时间：2023-09-05 |
| DOI： |
| 中文关键词: 核孔膜 Geant4 蒙特卡洛模拟 |
| 英文关键词:nuclear track-etched membrane Geant4 Monte Carlo simulation |
| 基金项目:厦门市青年创新基金资助项目(3502Z20206025) |
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| 中文摘要: |
| 利用核反应堆产生的裂变重离子碎片辐照固体薄膜,是生产核孔膜的主要方式之一。为优化反应堆核孔膜生产工艺参数,给核孔膜生产提供理论指导,本文基于Geant4开发了反应堆生产核孔膜的原理性模拟程序,对铀靶在热中子辐照下裂变碎片的生成及出射物理过程开展模拟,并分析计算了不同厚度下铀靶裂变碎片的出射能量、角度分布,从理论上优化了核孔膜生产中的铀靶厚度及固体薄膜厚度。结果表明,铀靶厚度为4 μm时裂变碎片出射强度最高;受裂变碎片射程的限制,反应堆生产核孔膜所用的固体薄膜的厚度最大约为8 μm。 |
| 英文摘要: |
| One of the main ways to produce nuclear track-etched membrane is irradiating solid membranes with the fission fragments produced by nuclear reactor. In order to optimize the production process parameters of nuclear track-etched membranes and provide theoretical guidance for nuclear track-etched membrane production, a simulation program is developed based on Geant4 to simulate the process of nuclear track-etched membrane produced by nuclear reactor. The physical process of generation and emission of neutron-induced Uranium 235 fission fragments are studied, and the energy and angular distributions of fission fragments under different thicknesses of the target are analyzed and calculated. The thickness of the Uranium target and solid membrane are optimized theoretically. It can be concluded that a 4 μm thick Uranium target has the highest emission intensity of fission fragments. The maximum thickness of the solid membranes is about 8 μm, which is limited by the range of fission fragments. |
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