Experimental validation of some thermal neutron self-shielding calculation methods for cylindrical samples in INAA

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Experimental validation of some thermal neutron self-shielding calculation methods for cylindrical samples in INAA. / Farina, Fulvio; Vermaercke, Peter; Sneyers, Liesel; Strijckmans, Karel; Bruggeman, Michel (Peer reviewer).

In: Journal of Radioanalytical and Nuclear Chemistry, Vol. 291, No. 2, 04.01.2012, p. 529-534.

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@article{67d6229824c240a2b0a94b1e4246cf45,
title = "Experimental validation of some thermal neutron self-shielding calculation methods for cylindrical samples in INAA",
abstract = "Neutron self-shielding has been a factor of concern in the history of Instrumental Neutron Activation Analysis. When the sample to be analyzed cannot be made small enough in size and/or sufficiently diluted, this undesired phenomenon must be accounted for. Several analytical, semi-empirical and computational methods for estimating the thermal neutron self-shielding effects have been extensively discussed in the literature and this work aims at the experimental validation of some of these methods by neutron irradiation of cylindrical samples containing strong thermal neutron absorbers. The accuracy and the relative differences in the results between these methods are discussed for cylindrical samples with up to 40{\%} thermal self-shielding, showing that a semi-empirical sigmoidal function can be more accurate in modeling this effect than other exact algorithms, where a maximum 2{\%} relative difference to the experimental values was obtained.",
keywords = "Instrumental Neutron Activation Analysis, Neutron self-shielding, Thermal neutrons, Neutron scattering, Neutron absorption",
author = "Fulvio Farina and Peter Vermaercke and Liesel Sneyers and Karel Strijckmans and Michel Bruggeman",
note = "Score = 10",
year = "2012",
month = "1",
day = "4",
doi = "10.1007/s10967-011-1211-y",
language = "English",
volume = "291",
pages = "529--534",
journal = "Journal of Radioanalytical and Nuclear Chemistry",
issn = "0236-5731",
publisher = "Springer",
number = "2",

}

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TY - JOUR

T1 - Experimental validation of some thermal neutron self-shielding calculation methods for cylindrical samples in INAA

AU - Farina, Fulvio

AU - Vermaercke, Peter

AU - Sneyers, Liesel

AU - Strijckmans, Karel

A2 - Bruggeman, Michel

N1 - Score = 10

PY - 2012/1/4

Y1 - 2012/1/4

N2 - Neutron self-shielding has been a factor of concern in the history of Instrumental Neutron Activation Analysis. When the sample to be analyzed cannot be made small enough in size and/or sufficiently diluted, this undesired phenomenon must be accounted for. Several analytical, semi-empirical and computational methods for estimating the thermal neutron self-shielding effects have been extensively discussed in the literature and this work aims at the experimental validation of some of these methods by neutron irradiation of cylindrical samples containing strong thermal neutron absorbers. The accuracy and the relative differences in the results between these methods are discussed for cylindrical samples with up to 40% thermal self-shielding, showing that a semi-empirical sigmoidal function can be more accurate in modeling this effect than other exact algorithms, where a maximum 2% relative difference to the experimental values was obtained.

AB - Neutron self-shielding has been a factor of concern in the history of Instrumental Neutron Activation Analysis. When the sample to be analyzed cannot be made small enough in size and/or sufficiently diluted, this undesired phenomenon must be accounted for. Several analytical, semi-empirical and computational methods for estimating the thermal neutron self-shielding effects have been extensively discussed in the literature and this work aims at the experimental validation of some of these methods by neutron irradiation of cylindrical samples containing strong thermal neutron absorbers. The accuracy and the relative differences in the results between these methods are discussed for cylindrical samples with up to 40% thermal self-shielding, showing that a semi-empirical sigmoidal function can be more accurate in modeling this effect than other exact algorithms, where a maximum 2% relative difference to the experimental values was obtained.

KW - Instrumental Neutron Activation Analysis

KW - Neutron self-shielding

KW - Thermal neutrons

KW - Neutron scattering

KW - Neutron absorption

UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/ezp_118077

UR - http://knowledgecentre.sckcen.be/so2/bibref/8710

U2 - 10.1007/s10967-011-1211-y

DO - 10.1007/s10967-011-1211-y

M3 - Article

VL - 291

SP - 529

EP - 534

JO - Journal of Radioanalytical and Nuclear Chemistry

JF - Journal of Radioanalytical and Nuclear Chemistry

SN - 0236-5731

IS - 2

ER -

ID: 378189