远程阿尔法辐射检测的进步:阿尔法诱导的射电发光成像与增强的环境光抑制
Lingteng Kong1, Thomas Bligh Scott1, John Charles Clifford Day1
1HH Wills Physics Laboratory, Interface Analysis Centre, School of Physics, University of Bristol, Tyndall Avenue, Bristol BS8 1TL, UK.
Sensors (Basel, Switzerland)
|June 27, 2024
概括
这项研究引入了一种新的远程α检测方法,使用α诱导的射电发光. 该技术为核工业至关重要的等α发射物的监测提供了更安全,更有效的监测.
科学领域:
- 核物理 核物理 核物理
- 放射检测 放射检测 放射检测 放射检测
- 频谱学是一种光谱学.
背景情况:
- 核工业中普遍存在的重核化物,如及其衰变产物,由于α排放,它们对健康构成风险.
- 目前的阿尔法检测方法需要非常接近,这导致了安全问题和运营效率低下.
研究的目的:
- 开发和演示使用α诱导射电发光的α发射器的遥感技术.
- 为了实现远距离检测α辐射的高灵敏度和空间精度.
主要方法:
- 利用放射性电离激发分子的光子发射现象来检测α粒子.
- 开发了一种"三明治"过器结构 (两个干扰过器之间的吸收),以增强环境光的排斥.
- 在各种照明条件下测试了系统的性能,包括室内灯光和手套箱环境.
主要成果:
- 在10分钟内成功检测到距离3米的29kBq美洲-241源.
- 证明了在2米距离的3MBq源与7厘米距离的29kBq源的空间分辨能力.
- 在不同的照明条件下验证了系统性能.
结论:
- 阿尔法诱导的射电发光为远程阿尔法检测提供了一种可行的方法,具有高灵敏度和精度.
- 开发的系统为传统的基于接触的检测方法提供了更安全,更有效的替代方案.
- 潜在的应用包括核取证,废物管理和退役行动.
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