Cai Xiangming, Zeng Xuwei, Qin Fengdi, Shan Jian
School of Nuclear Science and Technology, University of South China, Hengyang 421001, China.
Radon Key Laboratory of Hunan Province, Hengyang 421001, China.
Toxics. 2025 Jan 2;13(1):31. doi: 10.3390/toxics13010031.
In different measurement tasks, the duration allocated for radon progeny concentration measurement varies, and the requirements for measurement precision also differ. To accommodate the needs of various radon progeny concentration measurement tasks, this study takes the error in radon progeny concentration measurement as the optimization goal and the time points of the three-stage method as the optimization target, establishing an optimized three-stage method for radon progeny concentration measurement. The optimization algorithm allocates the three time periods under any total measurement time requirement, ensuring the highest measurement precision. The optimization algorithm can also optimize the measurement errors for Po, Pb, and Bi according to task requirements. By comparing with existing three-stage methods, when the total measurement time is 30 min, the optimization results are similar to Thomas's three-stage method; when the total measurement time is 15 min, the measurement results are consistent with the rapid three-stage method. Therefore, the optimized results of the three-stage method are reasonable and reliable, providing technical support for different radon progeny measurement tasks.
在不同的测量任务中，分配给氡子体浓度测量的持续时间各不相同，对测量精度的要求也有所差异。为了适应各种氡子体浓度测量任务的需求，本研究将氡子体浓度测量中的误差作为优化目标，将三段法的时间点作为优化对象，建立了一种优化的氡子体浓度测量三段法。该优化算法在任何总测量时间要求下分配三个时间段，确保最高的测量精度。优化算法还可根据任务要求优化钋、铅和铋的测量误差。通过与现有的三段法进行比较，当总测量时间为30分钟时，优化结果与托马斯三段法相似；当总测量时间为15分钟时，测量结果与快速三段法一致。因此，三段法的优化结果合理可靠，为不同的氡子体测量任务提供了技术支持。
