Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
6
pubmed:dateCreated
2002-10-30
pubmed:abstractText
A calibrated detection system developed for monitoring the residual activity in silicon rods irradiated for neutron transmutation doping is described. This residual activity is mainly due to 31Si and 32P, produced by thermal neutron capture reactions. The set-up consists of a scanning device, developed for positioning the rods, coupled to a GM detector for measuring beta-rays coming from the rod. The set-up has been calibrated using a 32P aqueous solution standardised in a 4pibeta gas-flow proportional counter system. The validity of the experimental procedure has been checked by Monte Carlo calculations. An additional check has been made by measuring the residual activity of a silicon rod irradiated in a well-known neutron fluence and the formalism used for calculating the activity on the basis of irradiation parameters is given. The results are compared to the radiological limit imposed by IAEA regulations in order to consider the material as exempt before it could be released for industrial applications.
pubmed:language
eng
pubmed:journal
pubmed:status
PubMed-not-MEDLINE
pubmed:month
Dec
pubmed:issn
0969-8043
pubmed:author
pubmed:issnType
Print
pubmed:volume
57
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
801-4
pubmed:dateRevised
2003-11-3
pubmed:year
2002
pubmed:articleTitle
Methodology for monitoring the residual activity in silicon rods irradiated with thermal neutrons.
pubmed:affiliation
Instituto de Pesquisas Energéticas e Nucleares, IPEN-CNEN/SP, Laboratorio de Metrologia Nuclear, CP 11049 Pinheiros, 05422-970, São Paulo, SP, Brazil. msdias@net.ipen.br
pubmed:publicationType
Journal Article