Large sample neutron activation analysis of a reference inhomogeneous sample

Vasilopoulou, T; Tzika, F; Koster-Ammerlaan, MJJ; Stamatelatos, IE

dc.contributor.author	Vasilopoulou, T	en
dc.contributor.author	Tzika, F	en
dc.contributor.author	Koster-Ammerlaan, MJJ	en
dc.contributor.author	Stamatelatos, IE	en
dc.date.accessioned	2014-03-01T01:35:54Z
dc.date.available	2014-03-01T01:35:54Z
dc.date.issued	2011	en
dc.identifier.issn	0236-5731	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/21246
dc.subject	Gamma Spectrometry	en
dc.subject	Large sample	en
dc.subject	Neutron activation analysis	en
dc.subject.classification	Chemistry, Analytical	en
dc.subject.classification	Chemistry, Inorganic & Nuclear	en
dc.subject.classification	Nuclear Science & Technology	en
dc.subject.other	arsenic 76	en
dc.subject.other	copper 64	en
dc.subject.other	europium 152	en
dc.subject.other	gallium 72	en
dc.subject.other	isotope	en
dc.subject.other	lanthanum 140	en
dc.subject.other	potassium 42	en
dc.subject.other	samarium 153	en
dc.subject.other	scandium 46	en
dc.subject.other	tungsten 187	en
dc.subject.other	unclassified drug	en
dc.subject.other	zinc 69	en
dc.subject.other	article	en
dc.subject.other	calibration	en
dc.subject.other	chemical analysis	en
dc.subject.other	controlled study	en
dc.subject.other	gamma radiation	en
dc.subject.other	gamma spectrometry	en
dc.subject.other	instrumental neutron activation analysis	en
dc.subject.other	irradiation	en
dc.subject.other	large sample neutron activation analysis	en
dc.subject.other	Monte Carlo method	en
dc.subject.other	neutron activation analysis	en
dc.title	Large sample neutron activation analysis of a reference inhomogeneous sample	en
heal.type	journalArticle	en
heal.identifier.primary	10.1007/s10967-011-1130-y	en
heal.identifier.secondary	http://dx.doi.org/10.1007/s10967-011-1130-y	en
heal.language	English	en
heal.publicationDate	2011	en
heal.abstract	A benchmark experiment was performed for Neutron Activation Analysis (NAA) of a large inhomogeneous sample. The reference sample was developed in-house and consisted of SiO2 matrix and an Al-Zn alloy "" inhomogeneity"" body. Monte Carlo simulations were employed to derive appropriate correction factors for neutron self-shielding during irradiation as well as self-attenuation of gamma rays and sample geometry during counting. The large sample neutron activation analysis (LSNAA) results were compared against reference values and the trueness of the technique was evaluated. An agreement within ±10% was observed between LSNAA and reference elemental mass values, for all matrix and inhomogeneity elements except Samarium, provided that the inhomogeneity body was fully simulated. However, in cases that the inhomogeneity was treated as not known, the results showed a reasonable agreement for most matrix elements, while large discrepancies were observed for the inhomogeneity elements. This study provided a quantification of the uncertainties associated with inhomogeneity in large sample analysis and contributed to the identification of the needs for future development of LSNAA facilities for analysis of inhomogeneous samples. © 2011 Akadémiai Kiadó, Budapest, Hungary.	en
heal.publisher	SPRINGER	en
heal.journalName	Journal of Radioanalytical and Nuclear Chemistry	en
dc.identifier.doi	10.1007/s10967-011-1130-y	en
dc.identifier.isi	ISI:000293029200011	en
dc.identifier.volume	289	en
dc.identifier.issue	3	en
dc.identifier.spage	731	en
dc.identifier.epage	737	en