利用来自中子断层扫描的激活辐射,可以免费揭示3D艺术品隐藏的元素组成
Yueer Li1, Sara Creange2, Zhou Zhou3
1Delft University of Technology, Faculty of Applied Sciences, Delft, 2629JB-15, The Netherlands. y.li-32@tudelft.nl.
Scientific reports
|November 23, 2024
概括
中子断层扫描现在可以同时揭示一个文物的内部结构和元素组成. 这种方法使用延迟马光谱在中子成像后进行"自由"元素分析,最大限度地减少辐射暴露.
科学领域:
- 材料科学 材料科学 材料科学
- 考古测量考古测量方法
- 核物理 核物理 核物理
背景情况:
- 中子断层扫描对于文化遗产金属文物进行非破坏性分析是有价值的.
- 来自中子断层扫描的诱导临时衰变辐射通常被视为一个限制.
- 中子断层扫描后延迟的马辐射为元素组成分析提供了潜力.
研究的目的:
- 提出一种光线追踪方法,用于对内部几何和元素组成的非侵入性量化.
- 用单个中子断层扫描实验进行综合分析.
- 为了尽量减少中子辐射,同时最大限度地提高数据采集效率.
主要方法:
- 开发一种射线追踪策略,以融合中子断层扫描和延迟马光谱数据.
- 将该方法应用于已知组成的大量物体进行验证.
- 在现实世界文化遗产对象上展示量化能力.
主要成果:
- 成功量化了散装物体中的内部几何和元素组成.
- 将这种方法应用于一个古老的印度尼西亚青铜雕像,揭示了内部隔离.
- 识别和量化雕像中隐藏的供物组成.
结论:
- 提出的方法有效地结合了单个中子断层扫描实验的结构和元素分析.
- 这种方法提供了对文物组成和制造工艺的宝贵见解.
- 它符合在文化遗产研究中对有效的中子束时间利用和最小样本辐射的需求.
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