ANALYSIS OF THE PROBABILITY DISTRIBUTION OF THE NUMBER OF DETECTOR COUNTS FOR DETECTING MATERIALS BY RADIATION METHODS

被引：0

作者：

Laikin, A. I. ^{[1
]}

Platovskikh, Yu. A. ^{[1
]}

机构：

[1] Krylovskii State Sci Ctr, St Petersburg, Russia

来源：

ATOMIC ENERGY | 2015年 / 117卷 / 04期

关键词：

Compendex;

D O I：

10.1007/s10512-015-9920-x

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

To evaluate detection characteristics by means of an analysis of gamma-ray spectra, it is necessary to set a probability distribution for the number of counts that contains their mathematical expectation. In measurements, the mathematical expectation is a random quantity. These random quantities are averaged for the Poisson and Gaussian distributions. Calculations of the detection characteristics show that for a small average number of counts 10-100 the averaged Poisson distribution should be used. The Gaussian approximation and the ordinary Poisson distribution lead to large errors in the detection characteristics.

引用

页码：265 / 269

页数：5