Time-to-Count技术测量辐射强度的原理

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Time-to-Count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.

Rationale of Time-to-Count technology to measure radianl intensity

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 al Si ti. At last the correctness of this method is verified by computer simulation.