Development and implementation of Høgdahl convention and Westcott formalism for k0-INAA application at Malaysian Nuclear Agency reactor

Yavar, Alireza; Sarmani, Sukiman; Wood, Abdul Khalik; Zainal, Nurul Syakireen; Khoo, Kok Siong

doi:10.1007/s10967-011-1574-0

Cited by 5 publications

(8 citation statements)

References 14 publications

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“…The energy range was from 58.91 keV to 1332.58 keV. After the peak detection efficiency values computed by a least square regression analysis, and then the fitted curve is plotted in scale of [5,6].…”

Section: Methodsmentioning

confidence: 99%

“…Then γ-spectrometry measurements were found with an HPGe detector and subsequently elemental concentrations in CRMs of IAEA-Soil 7 were calculated by k 0 -NAA method [6].…”

Section: Methodsmentioning

confidence: 99%

“…This is the parameter of most significance in practical γ-ray spectrometry. This determination according to the methodology worked out in the k 0 -instrumental neutron activation analysis (k 0 -INAA) method goes as follows [3][4][5][6]:…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The Better Efficiency Calibration for HPGe Detector by Comparing the Single Point Gamma Sources and Multi-nuclides Gamma Source for k0-NAA Method

Yavar¹,

Sarmani²,

Khoo³

2014

IOSRJAP

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Section: Methodsmentioning

confidence: 99%

“…Then γ-spectrometry measurements were found with an HPGe detector and subsequently elemental concentrations in CRMs of IAEA-Soil 7 were calculated by k 0 -NAA method [6].…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

The Better Efficiency Calibration for HPGe Detector by Comparing the Single Point Gamma Sources and Multi-nuclides Gamma Source for k0-NAA Method

Yavar¹,

Sarmani²,

Khoo³

2014

IOSRJAP

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“…A convenção de Høgdahl procura ser uma alternativa menos laboriosa, o que torna esta convenção simples para ser utilizada. Entretanto, ela é restrita para reações (n, ) nas quais o fator de Westcott é igual à unidade [5,40,41] . Em situações em que difere da unidade, recomenda-se não utilizar a convenção de Høgdahl e considerar a temperatura do nêutron, o que, em outras palavras, significa utilizar o formalismo de Westcott [35,[42][43][44] .…”

Section: Convenção De Høgdahlunclassified

“…Em situações em que difere da unidade, recomenda-se não utilizar a convenção de Høgdahl e considerar a temperatura do nêutron, o que, em outras palavras, significa utilizar o formalismo de Westcott [35,[42][43][44] . Ao longo dos anos, adaptações foram feitas em ambas convenções [32,36,41,44,45] . A convenção de…”

Section: Convenção De Høgdahlunclassified

Estudo de técnicas estatísticas aplicadas à determinação de parâmetros no método <i>k<sub>0</sub></i> de análise por ativação neutrônica

Ribeiro¹

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The present work aims to improve a code for calculating k0 and Q0 parameters, called COVAR, adding another method of calculating k0 factor and improving the covariance analysis, creating a new version: COVAR v4.1. The present work also aims the development of a new method of calculating the alpha and several k0 parameters in a single least square fit, by means of a novel methodology, using covariance matrices and all partial uncertainties. For the calculations applying this new method, another code was developed, called AKFIT v2.1 which performs linear and non-linear fittings for the determination of alpha and k0 parameters for several irradiations in different periods. We used a database with irradiations in the years 2008 and 2010 performed at the IEAR-1 nuclear reactor of the IPEN-CNEN/SP, by the Nuclear Metrology Laboratory (LMN), corresponding to radionuclides 95 Zr, 65 Zn, 69m Zn, 46 Sc, 140 La and 60 Co and resulting in 21 data sets which were analyzed in order to verify the performance of COVAR4.1 and AKFIT2.1. For COVAR v4.1, the results with the alternative calculation of k0 factor were close to the already existing calculation and were consistent with the literature. For AKFIT v2.1 fittings were performed with both irradiations simultaneously and separately. The fitted models agreed with the literature. The value was 0,0025(83), which agrees with previous results obtained by the LMN. The correlations between the parameters k0 behaved as expected, with smaller values between different elements and greater correlations between equal elements with different energies and using the same comparator measurement. It can be concluded that the proposed methods were able to calculate the values of k0, with AKFIT v2.1 being a new technique in which it is possible to determine two parameters, alpha and k0 at the same time, quickly and accurately. It is expected that AKFIT code can be improved by adding more parameters, such as Q0 and f, by making a complete fitting for the determination of all the main parameters for the k0 NAA method.

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Neutron activation analysis of ancient Italian tile samples

Johnsen

Durrant

Ünlü

2019

J Radioanal Nucl Chem

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Development and implementation of Høgdahl convention and Westcott formalism for k0-INAA application at Malaysian Nuclear Agency reactor

Cited by 5 publications

References 14 publications

The Better Efficiency Calibration for HPGe Detector by Comparing the Single Point Gamma Sources and Multi-nuclides Gamma Source for k0-NAA Method

The Better Efficiency Calibration for HPGe Detector by Comparing the Single Point Gamma Sources and Multi-nuclides Gamma Source for k0-NAA Method

Estudo de técnicas estatísticas aplicadas à determinação de parâmetros no método <i>k<sub>0</sub></i> de análise por ativação neutrônica

Neutron activation analysis of ancient Italian tile samples

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