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改进了PGNAA设施的探测器屏蔽,用于测量度

M Jafari¹, H Jafari¹, M H Choopan Dastjerdi²

¹Department of Radiation Application, Shahid Beheshti University, Tehran, Iran.

|December 6, 2024

概括

这项研究解决了使用快速马中子激活分析 (PGNAA) 测量度的挑战. 用覆盖探测器屏蔽显著减少屏蔽中的干扰峰,提高准确性.

科学领域:

核物理核物理核物理
分析化学分析化学

背景情况:

快速玛中子激活分析 (PGNAA) 设施使用辐射屏蔽,通常含有酸聚乙烯和,以检测玛射线.
探测器屏幕内的可以在马光谱学中产生显著的峰,干扰样品中度的准确确定.

研究的目的:

调查减轻PGNAA中盾牌诱导的峰干扰的方法.
为了提高样品中度测量的精度.

主要方法:

利用蒙特卡洛模拟来建模辐射传输.
研究了用板覆盖探测器盾的效果.
进行模拟结果的实验验证.

主要成果:

用一张板覆盖探测器屏幕,使得来自屏幕的峰减少了99.32%.
蒙特卡洛模拟准确地预测了屏蔽的有效性.
实验结果证实了模拟发现.

结论:

屏蔽是一种高效的方法,可以抑制PGNAA中检测器屏蔽中的干扰峰.
这种技术显著提高了样品中度测量的可靠性.

关键词:

的度的度探测器盾牌的检测器这是一个MNSR.蒙特卡罗的蒙特卡罗是一个非常好的城市.这是一个PGNAAA.

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