Study of variance and covariance terms in linear attenuation coefficient measurements of irregular samples through the two media method by gamma-ray transmission

Autor:	Renato Yoichi Ribeiro Kuramoto, Carlos Roberto Appoloni
Rok vydání:	2002
Předmět:	Correlation Propagation of uncertainty Radiation Gamma ray transmission Degree (graph theory) Transmission (telecommunications) Attenuation coefficient Statistics Variance (accounting) Covariance Mathematics
Zdroj:	Applied Radiation and Isotopes. 57:445-447
ISSN:	0969-8043
DOI:	10.1016/s0969-8043(02)00119-7
Popis:	The two media method permits the application of Beer's law (Thesis (Master Degree), Universidade Estadual de Londrina, PR, Brazil, pp. 23) for the linear attenuation coefficient determination of irregular thickness samples by gamma-ray transmission. However, the use of this methodology introduces experimental complexity due to the great number of variables to be measured. As consequence of this complexity, the uncertainties associated with each of these variables may be correlated. In this paper, we examine the covariance terms in the uncertainty propagation, and quantify the correlation among the uncertainties of each of the variables in question.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b514d1177328fc2943582f55085b659d https://doi.org/10.1016/s0969-8043(02)00119-7 Zobrazit plný text záznamu Full Text from ScienceDirect