摘要
GM管广泛应用于辐射测量,由于传统的测量方法受到GM管死时间的影响,其测量精度不高。介绍了没有死时间影响,可以提高测量精度的T im e-to-Coun t技术的测量方法,并从理论上论证了采用该方法的数学原理,在此基础上,提出对辐射强度的新估计式,并证明该估计是无偏的渐近最优的,是形式中最优的。并通过计算机仿真证明了该方法的正确性。
GM tube is widely used in the field of radiation measurement. But it＇s testing accuracy is low. Becauce the traditional measuring method is affected by the die-time of GM tube. This paper introduces the Time-to-Count technology, which is not affected by die-time and may enhance the testing accuracy of GM tube,and theoretically proves the mathematic rationale of this method. Thereafter, a new method for estimating radiant intensity is proposed, and the new estimate formula is proved to be an unbiased and asymptotic-optimum estimator, and the best estimator in the form of a/∑ ti. At last the correctness of this method is verified by computer simulation.
出处
《核电子学与探测技术》
CAS
CSCD
北大核心
2006年第1期41-44,125,共5页
Nuclear Electronics & Detection Technology
作者简介
刘志强（1979-），男，博士生，从事光电检测技术的研究
