一种基于脉冲解卷的NaI(Tl) 探测器的新温度校正方法
Jianming Xie1, Liu Yang1, Jinglun Li1
1State Key Laboratory of NBC Protection for Civilian, Beijing 102205, China.
Sensors (Basel, Switzerland)
|June 10, 2023
概括
一种新的DTSAC方法使用脉冲处理来纠正NaI(Tl) 探测器中的温度效应. 这种技术可以在没有额外的硬件的情况下增强能量光谱,提高温度的准确性.
科学领域:
- 核仪器仪表 核仪器仪表 核仪器仪表
- 频谱测量是一种光谱测量.
- 探测器物理学的物理
背景情况:
- 温度变化显著影响化 (化) [NaI (Tl)) ]检测器的性能.
- 减轻温度影响的现有方法通常需要额外的硬件或复杂的校准程序.
研究的目的:
- 引入一种新的,独立于硬件的方法,用于纠正 NaI(Tl) 探测器中因温度而引起的偏移.
- 验证DTSAC方法在提高能量光谱学精度方面的有效性.
主要方法:
- 开发了DTSAC (解卷,梯形造型,振幅校正) 方法.
- 测量到的探测器脉冲来自NaI(Tl) -光倍增管 (PMT) 探测器,其温度范围为-20°C至50°C.
- 应用脉冲解卷,梯形造型和振幅校正以补偿温度.
主要成果:
- DTSAC方法有效地纠正了温度引起的漂移,Cs 662 keV的峰值位置显示不到3 keV的漂移.
- 在662 keV的能量分辨率在测试的梯形宽度中保持在6.91%至10.60%之间.
- 该方法在不需要参考峰或额外的电子电路的情况下证明了成功的校正.
结论:
- DTSAC方法提供了一种高效的,无需硬件的解决方案,用于减轻 NaI(Tl) 探测器中的温度效应.
- 这种方法同时纠正脉冲形状和振幅,使其适用于高计数率的应用.
- 在温度波动的环境中,DTSAC提高了能量光谱的可靠性和准确性.
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