对十九世纪韩国铜币的中子干扰计和断层扫描的应用
Youngju Kim1,2,3, M Cyrus Daugherty2,4, Daniel S Hussey2
1Neutron Science Division, Korea Atomic Energy Research Institute, Daejeon, South Korea.
Scientific reports
|April 28, 2025
概括
中子成像技术揭示了微观结构的差异,区分了真实的19世纪韩国铜币与复制品. 该方法通过识别沉积物和腐蚀模式来帮助文化遗产分析.
科学领域:
- 文化遗产科学 文化遗产科学
- 材料科学 材料科学 材料科学
- 中子影像成像技术
背景情况:
- 验证历史硬币等文化文物真实性是一项挑战.
- 从复制品区分真正的物体需要先进的分析方法.
研究的目的:
- 应用中子网干扰测量和断层扫描来区分正宗的19世纪 Joseon 时期韩国铜币与复制品.
- 调查真实和复制品硬币之间的微观结构和内部结构变化.
主要方法:
- 通过暗场成像 (小角度中子散射) 进行微观结构分析 (孔径,沉物) 的中子格子干涉测量.
- 中子传导断层扫描用于3D内部结构检查.
- 能量分散式X射线光谱用于定量含量分析.
- 光学成像用于比较分析.
主要成果:
- 这两种中子成像技术都在铜合金中发现了沉物,与光学成像和X射线光谱学相一致.
- 在真实硬币和复制硬币之间观察到不同的腐蚀模式.
- 暗场对比于与沉信号相关的铜.
结论:
- 中子成像有效地揭示了对文物认证至关重要的微观结构差异.
- 该研究提供了对历史文物中铜合金腐蚀机制的见解.
- 中子技术为分析文化遗产对象提供了一种非破坏性的方法.
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