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Sluijs, R. van; Bossus, D.; Blaauw, M.; Kennedy, G.; Wispelaere, A. De; Lierde, S. Van; Corte, F. De

doi:10.1023/a:1006718812155

Cited by 12 publications

(3 citation statements)

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“…Many routines have been developed to perform coincidence summing calculations. Three of the routines used with the k 0 method were compared for the case of a small sample counted close to the detector [41]. The reduction in detection efficiency due to summing-out was as high as 30% for some nuclides.…”

Section: Detection Efficiency εmentioning

confidence: 99%

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Application of the k₀method in neutron activation analysis and in prompt gamma activation analysis

Révay

Kennedy

2012

Radiochimica Acta

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The k0 method is a highly successful standardization method developed for Neutron Activation Analysis (NAA), later also introduced in Prompt Gamma Activation Analysis (PGAA). After the careful calibration of the irradiation and counting facilities, the k0 method makes the use of elemental standards unnecessary. Masses of the components are determined relative to the flux monitor, or, in the case of PGAA, to other known components of the sample. The development of the method is summarized in this review together with the description of methods implemented at different laboratories. The activities carried out in the laboratories of the authors are described as examples for the successful implementation of the k0 approach to activation analysis.

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Section: Detection Efficiency εmentioning

confidence: 99%

“…When good standards became available they were used to verify the accuracy of the results obtained with the k 0 method [41] and in a few cases new k 0 and Q 0 values were proposed [28].…”

Section: Installation In a Small Naa Laboratorymentioning

confidence: 99%

Application of the k₀method in neutron activation analysis and in prompt gamma activation analysis

Révay

Kennedy

2012

Radiochimica Acta

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“…In a recent study [9], a comparison of COI-factors, calculated at DSM, INW and IRI was made. The calculation of these COI-factors was done for a configuration of a source which was measured close to a DSM detector and the comparison was made for all gamma lines in the KAYZERO/SOLCOI 9…”

Section: Comparison Of Inw (Gent) Dsm (Geleen) and Iri (Delft) Coi-fmentioning

confidence: 99%

A re-examination of coincidence and gamma-peak doublet handling in Kayzero-based NAA

et al. 1999

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In order to further strengthen at DSM Research the key analytical technique "neutron activation analysis" based on the KAYZERO/SOLCOI 9 software package, a project was recently started aiming at, among others, improvements in the correction for true-coincidence and in the automatic handling of peak multiplets. Problems could be identified in the calculation of true-coincidence correction factors for a number of analytically important cascade gamma lines of about 20 radionuclides including those formed from the elements Fe, As, Zr, Mo, Ag, Sb, some rare earth elements, Ta, W and U. As an example, in the present paper an outline is given of sources of error -caused by computer programming, decay scheme analysis or selection of relevant decay data -that are related to the measurement of 76As, 124Sb, 149Nd, 182Ta and 187W. For some radionuclides, k0-factors of analytically relevant gamma lines present in multiplets (in most cases doublets) were formerly not available. Hence, problems existed with the automatic computer-assisted conversion of input peak areas to output analytical results. Therefore, remeasurement of the individual k0-factors was carried out by using a high-performance Ge-detector and a gamma-spectrum analysis program with proven accuracy. This study involved a number of gamma lines of radionuclides for the determination of some 10 elements among which Mo, Pd, Ag, Eu and U were included. This now leads to the elimination of important data processing errors. IntroductionAt DSM Research, ko-NAA -supported by the home-designed (and commercially available) KAYZERO/SOLCOI 9 PC-software package [1] -is one of the key analytical techniques [2], complementary to XRF, ICP-MS, ICP-OES and AAS. In order to further increase its manageability and performance capability, a project was recently initiated comprising the following topics: correction for true coincidence, the automatic handling of gamma-peak multiplets, the extension of the nuclear data library with remeasured ko and Qo values, the generalisation of the implemented mother-daughter relations and the correction for fission and threshold reactions. In the present contribution, results are reported on the first two of these topics.A recent comparison of coincidence correction (COI) factors for all gamma-lines in the KAYZERO/SOLCOI ~ database, calculated with SOLCOI 9 and with two other computer codes, revealed that -although in the majority of the cases the results were consistent -sometimes significant discrepancies occurred. This initiated -for the analytically important gamma-lines among these cases -a detailed examination of possible sources of error, either caused by computer programming, decay scheme analysis or selection of relevant decay data. In the present work, examples are given for 7SAs, 124Sb, 149Nd, lS2Ta and lS7W. KAYZERO/SOLCOI 9 is unable to automatically

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Activation Analysis

Zeisler¹,

Vajda²,

Kennedy³

et al. 2011

Handbook of Nuclear Chemistry

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Cited by 12 publications

References 2 publications

Application of the k₀method in neutron activation analysis and in prompt gamma activation analysis

Application of the k₀method in neutron activation analysis and in prompt gamma activation analysis

A re-examination of coincidence and gamma-peak doublet handling in Kayzero-based NAA

Activation Analysis

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Untitled

Cited by 12 publications

References 2 publications

Application of the k0method in neutron activation analysis and in prompt gamma activation analysis

Application of the k0method in neutron activation analysis and in prompt gamma activation analysis

A re-examination of coincidence and gamma-peak doublet handling in Kayzero-based NAA

Activation Analysis

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Application of the k₀method in neutron activation analysis and in prompt gamma activation analysis

Application of the k₀method in neutron activation analysis and in prompt gamma activation analysis