评估粒子加速器中的光子和质子诱导激活
Abdel-Mjid Nourreddine1, Jonathan Collin1, Nicolas Arbor1
1Université de Strasbourg, IPHC, 23 rue du Loess, F-67037 Strasbourg, France.
Radiation protection dosimetry
|November 14, 2024
概括
这项研究量化了暴露于电子和质子束的材料中的放射性,这对于粒子加速器的安全性和设计至关重要. 模拟和实验证实了各种元素的诱导放射性水平.
科学领域:
- 核物理 核物理 核物理
- 材料科学是一种材料科学.
- 加速器技术的加速器技术.
背景情况:
- 在医学和工业中使用的粒子加速器在材料中诱导放射性.
- 了解这种诱导放射性对安全,废物管理和未来设计至关重要.
- 之前的研究通常集中在单波束类型或模拟方法上.
研究的目的:
- 研究和量化各种材料 (Sc, Cu, Tb, Ta, W, Au) 中产生的放射性.
- 为了将模拟结果与硬Bremsstrahlung光子和二次中子的实验测量进行比较.
- 使用固态核轨道探测器来描述中子场.
主要方法:
- 蒙特卡洛模拟 (MCNP,GEANT4,FLUKA,PHITS) 与分析代码 (CINDER'90,FISPACT-II) 结合在一起.
- 用 18 MeV Bremsstrahlung 光子和二次中子对目标材料进行辐射.
- 使用高分辨率马光谱和CR-39探测器进行实验验证.
主要成果:
- 在多种材料中精确估计值反应速率和诱导放射性.
- 模拟代码与来自医疗 LINAC 和循环仪的实验数据的验证.
- 在二次辐射场中的热和快中子元件的表征.
结论:
- 该研究提供了对加速器环境中的核激活的全面评估.
- 经过验证的模拟方法可以可靠地预测加速器应用的诱导放射性.
- 对中子场的准确表征对于辐射安全评估至关重要.
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