摘要
为确保单闪烁室流气静态法准确测量222Rn/220Rn浓度,进行了222Rn、220Rn刻度系数的理论研究,讨论了采样流率对刻度系数的影响,通过理论公式计算得到了刻度系数的理论值,并与标准刻度后的实验值进行比较.结果表明刻度系数的实验值和理论值是一致的,偏差在5%以内,确保了222Rn、220Rn刻度系数实验值的准确性,从而确保单闪烁室流气静态法的可靠性.
For accurate measurements of radon/thoron concentrations with a gas_through and static time_delay method using a single scintillation cell,a theoretical study of radon/thoron calibration factors was carried out and the influences of sampling flow rate on cali_bration factors were discussed. The theoretical values of calibration factors were calculated by theoretical formulas and compared with the experimental values after standard calibra_tion. The results show that the experimental values are in good agreement with the theoreti_cal values,and the deviations are less than 5%. The accuracy of experimental values of ra_don/thoron calibration factors can be ensured, so as to ensure the reliability of the gas_through and static time_delay method with a single scintillation cell.
出处
《南华大学学报（自然科学版）》
2014年第4期1-4,共4页
Journal of University of South China：Science and Technology
基金
国家自然科学基金资助项目(11075070)
教育部博士点基金资助项目(20114324110003)
关键词
222
Rn/
220
Rn气体
单闪烁室
流气静态法
理论研究
Radon/Thoron
single scintillation cell
gas_through and static time_delay method
theoretical study
