Document Detail


Bonner sphere neutron spectrometry at nuclear workplaces in the framework of the EVIDOS project.
MedLine Citation:
PMID:  17327239     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The Institute for Radiological protection and Nuclear Safety was engaged in the EC funded EVIDOS project to provide reference spectrometry data using its Bonner sphere system. The data were processed by means of two unfolding codes, NUBAY and GRAVEL, both provided by the Physikalisch-Technische Bundesanstalt. The NUBAY program, based on Bayesian parameter estimation methods, assumes a parameterised spectrum and provides posterior probability distributions for the parameters. The code GRAVEL, an iterative algorithm based on SAND-II, was used with various default spectra, among them the NUBAY solution. The BS measurements were used to establish the neutron fluence energy distributions and reference values for the neutron ambient dose equivalent. As this quantity depends strongly on the high energy neutrons, a sensitivity analysis was done by unfolding the BS data with GRAVEL using the NUBAY solution spectrum as default with various changes in the parameters of the high energy peak. This new method of analysing Bonner sphere data allowed the determination of reliable neutron spectra, as well as a very good estimate of the corresponding integral quantities with small associated uncertainties.
Authors:
V Lacoste; M Reginatto; B Asselineau; H Muller
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2007-02-27
Journal Detail:
Title:  Radiation protection dosimetry     Volume:  125     ISSN:  0144-8420     ISO Abbreviation:  Radiat Prot Dosimetry     Publication Date:  2007  
Date Detail:
Created Date:  2008-03-12     Completed Date:  2008-09-24     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8109958     Medline TA:  Radiat Prot Dosimetry     Country:  England    
Other Details:
Languages:  eng     Pagination:  304-8     Citation Subset:  IM    
Affiliation:
Institut de Radioprotection et de Sûreté Nucléaire, BP 3, F-13115 Saint-Paul-lez-Durance, France. Veronique.Lacoste@irsn.fr
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MeSH Terms
Descriptor/Qualifier:
Algorithms*
Environmental Exposure / analysis*
Equipment Design
Equipment Failure Analysis
Internationality
Power Plants*
Radiation Dosage
Radiation Monitoring / instrumentation*
Radiation Protection / instrumentation*
Reproducibility of Results
Sensitivity and Specificity
Spectrum Analysis / methods*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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