Published 2007 | Version v1
Miscellaneous Metadata-only

Covariance analysis of detections processes in k0 NAA methodology

Creators

  • 1. Instituto de Pesquisas Energeticas e Nucleares (IPEN/CNEN-SP), Sao Paulo, SP (Brazil)

Description

The use of k0 for quantitative reactor neutron-activation analysis (NAA) is a well known method for determination of multi-elemental concentrations in different materials. The general formula that yields the concentration value can be divided in two parts: one involving detection parameters and the other involving irradiation parameters. The rigorous uncertainty calculation must take into account the correlations between each of these parameters. The present work describes a methodology applying covariance analysis to obtain the overall uncertainty in the concentrations of different elements in a given sample and the correlation between each pair of them. This first paper concentrates in the detection process parameters using experimental data obtained in the IEA-R1 research reactor. (author)

Part of:
Proceedings of the INAC 2007 International nuclear atlantic conference. Nuclear energy and energetic challenges for 21st. century. 15. Brazilian national meeting on reactor physics and thermal hydraulics; 8. Brazilian national meeting on nuclear applications

Additional details

Publishing Information

ISBN
978-85-99141-02-1
Imprint Title
Proceedings of the INAC 2007 International nuclear atlantic conference. Nuclear energy and energetic challenges for 21st. century. 15. Brazilian national meeting on reactor physics and thermal hydraulics; 8. Brazilian national meeting on nuclear applications
Imprint Pagination
[vp.]
Journal Page Range
[6 p.]

Conference

Title
INAC 2007 International nuclear atlantic conference. Nuclear energy and energetic challenges for 21st. century. 15. Brazilian national meeting on reactor physics and thermal hydraulics; 8. Brazilian national meeting on nuclear applications
Dates
30 Sep - 5 Oct 2007
Place
Santos, SP (Brazil)

INIS

Country of Publication
Brazil
Country of Input or Organization
Brazil
INIS RN
39086851
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Resource subtype / Literary indicator
Conference, Numerical Data, Non-conventional Literature
Descriptors DEI
DATA COVARIANCES; EFFICIENCY; EXPERIMENTAL DATA; GAMMA SPECTROSCOPY; IEAR-1 REACTOR; LANTHANUM 140; NEUTRON ACTIVATION ANALYSIS; RADIATION SOURCES; SCANDIUM 46
Descriptors DEC
ACTIVATION ANALYSIS; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; CHEMICAL ANALYSIS; DATA; DAYS LIVING RADIOISOTOPES; ENRICHED URANIUM REACTORS; INFORMATION; INTERMEDIATE MASS NUCLEI; INTERNAL CONVERSION RADIOISOTOPES; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; LANTHANUM ISOTOPES; NONDESTRUCTIVE ANALYSIS; NUCLEI; NUMERICAL DATA; ODD-ODD NUCLEI; POOL TYPE REACTORS; RADIOISOTOPES; RARE EARTH NUCLEI; REACTORS; RESEARCH AND TEST REACTORS; RESEARCH REACTORS; SCANDIUM ISOTOPES; SECONDS LIVING RADIOISOTOPES; SPECTROSCOPY; THERMAL REACTORS; WATER COOLED REACTORS; WATER MODERATED REACTORS

Optional Information

Notes
12 refs., 4 tabs. Code: E03_1807.pdf