同时使用激光驱动的X射线和中子源进行同轴多模式检查
C D Armstrong1, G G Scott1, S Richards2
1Central Laser Facility, Rutherford Appleton Laboratory, Harwell OX11 6FQ, United Kingdom.
The Review of scientific instruments
|October 7, 2024
概括
这项研究展示了使用X射线和激光等离子体相互作用的快速中子进行单射,同轴放射学的新方法. 这种技术可以同时使用两种辐射类型进行非破坏性成像,以提高诊断能力.
科学领域:
- 物理 物理学 物理
- 等离子体物理学的物理学
- 放射学 放射学 放射学 放射学
背景情况:
- 激光-等离子相互作用会产生各种能量辐射,包括X射线和中子.
- 在成像中结合不同类型的辐射可以获得更全面的数据.
- 非破坏性成像从多模式辐射源中受益.
研究的目的:
- 为了证明使用X射线和快速中子辐射的一次射击,同轴放射.
- 开发一种能够将X射线与中子分离出来的系统,用于同时成像.
- 评估该技术在先进的非破坏性成像应用中的可行性.
主要方法:
- 使用激光驱动的等离子体产生X射线和快速中子辐射.
- 采用一对封闭的微通道板光倍增管道通道进行检测.
- 使用快速闪介质来获取信号.
- 实现一个同轴放射学设置,用于同时测量.
主要成果:
- 通过X射线和快速中子辐射成功进行单射线同轴放射.
- 实现了系统恢复全宽半最大的 (18 ± 3) ns.
- 证明了从中子到 (72 ± 20) MeV的X射线的隔离.
- 辐射隔离是有效的,即使在距离目标很短的距离 (2米).
结论:
- 开发的系统可以从单个激光驱动源同时进行X射线和快速中子放射.
- 获得的时间分辨率足以在MeV能量范围内分离X射线和中子.
- 该技术为各种科学领域的非破坏性成像和诊断提供了有前途的进步.
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