The application and development of k0-standardization method of neutron activation analysis at Dalat research reactor

Dũng, Hồ Mạnh; Hien, P.D.

doi:10.1023/a:1026160731601

Cited by 31 publications

(14 citation statements)

References 2 publications

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“…This figure shows that the curve profiles are nearly the same for all tube diameters. The efficiency curve has a knee at approximately 80 keV and the lower efficiency that was observed in the range below this knee arises from the absorption of the low-energy photons by the cladding material of the detector [26].…”

Section: Resultsmentioning

confidence: 99%

Calibration of HPGe detector for flowing sample neutron activation analysis

Abdo

Soliman

Ahmed

et al. 2015

J Radioanal Nucl Chem

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This work is concerned with the calibration of the HPGe detector used in flowing sample neutron activation analysis technique. The optimum counting configuration and half-life based correction factors have been estimated using Monte Carlo computer simulations. Depending on detection efficiency, sample volume and flow type around the detector, the optimum geometry was achieved using 4 mm diameter hose rolled in spiral shape around the detector. The derived results showed that the half-life based efficiency correction factors are strongly dependent on sample flow rate and the isotope half-life.

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Section: Resultsmentioning

confidence: 99%

Calibration of HPGe detector for flowing sample neutron activation analysis

Abdo

Soliman

Ahmed

et al. 2015

J Radioanal Nucl Chem

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“…the calibration of full energy peak efficiency for gamma-ray spectrometer (e p ), the determination of neutron parameters for irradiation facility (a, f, f F , fluxes), the correction of interference nuclear reactions and the report of results (mass fraction of elements, uncertainty and detection limit), etc. It should be noted that the software has worked out the neutron parameters calculation based on gamma-ray spectra of the Au and Zr monitors ( 198 Au and 95 Zr/ 97 Zr, respectively) for a and f factors while the Co, Ni and Au monitors ( 58 Co, 65 Ni and 198 Au, respectively) were used for the calculation of thermal to fast neutron fluxes ratio (f F ) and the neutron fluxes as well [1,18]. The correction of interference nuclear reactions, Results and discussion Table 1 shows the mass fractions of elements and uncertainties in mg/kg for three types of SMELS (I, II & III) along with the x lab /x ref ratios, relative biases (RBs) and uscores Fig.…”

Section: Methodsmentioning

confidence: 99%

“…The k 0 -standardized neutron activation analysis (k 0 -NAA) has been studied and applied at the 500 kW Dalat research reactor (DRR) of Vietnam for over 15 years [1][2][3]. Successful introduction of k 0 -NAA using ''Ko-Dalat'' software has allowed to extend its applications to the samples of petroleum, archaeology and environment besides other traditional fields, i.e.…”

Section: Introductionmentioning

confidence: 99%

Quality evaluation of the k 0-standardized neutron activation analysis at the Dalat research reactor

Tran

et al. 2016

J Radioanal Nucl Chem

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Quality evaluation of the k 0 -standardized neutron activation analysis (k 0 -NAA) at Dalat research reactor (DRR) has been implemented by analyzing the SMELS, a synthetic multi-element standard material as well as the certified reference materials for purposes of validation and verification of the method. The results revealed that the k 0 -NAA established at DRR has met the requirements of multi-element analysis for the intended applications with about 42 elements: Al, As, and Zr in matrices of environment, geology and biology among others. Evaluation criteria for the laboratory quality used in this work are the statistical analysis parameters namely: u-scores, laboratory result/certified value ratios and relative biases as well as the control charts those are shown in the paper.

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“…The K0-Dalat program [29,30] is applied to calculate the elemental concentrations, the uncertainties, and the detection limits. Figure 2 are the XRD patterns of the -MnO 2 nanostructure.…”

Section: Gamma Activity Measurementmentioning

confidence: 99%

Determination of Cobalt in Seawater Using Neutron Activation Analysis after Preconcentration by Adsorption ontoγ-MnO₂Nanomaterial

Dinh

Nguyen³

et al. 2018

Journal of Chemistry

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The -MnO 2 nanomaterial has been used to adsorb cobalt in the seawater at Phan Thiet City, Binh Thuan Province, Vietnam. Its concentration is determined by using the neutron activation analysis (NAA) method at the Dalat nuclear research reactor. Factors affecting the uptake of cobalt on the -MnO 2 material such as the pH, adsorption time, and initial cobalt(II) concentration are investigated. The irradiated experiment data are calculated using the K0-Dalat program. The results obtained show that the trace dissolved cobalt in Phan Thiet seawater is found equal to 0.25 ± 0.04 g/L ( = 5, = 95%) with the adsorption efficiency being higher than 95% ( = 4, = 95%).

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The application and development of k0-standardization method of neutron activation analysis at Dalat research reactor

Cited by 31 publications

References 2 publications

Calibration of HPGe detector for flowing sample neutron activation analysis

Calibration of HPGe detector for flowing sample neutron activation analysis

Quality evaluation of the k 0-standardized neutron activation analysis at the Dalat research reactor

Determination of Cobalt in Seawater Using Neutron Activation Analysis after Preconcentration by Adsorption ontoγ-MnO₂Nanomaterial

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The application and development of k0-standardization method of neutron activation analysis at Dalat research reactor

Cited by 31 publications

References 2 publications

Calibration of HPGe detector for flowing sample neutron activation analysis

Calibration of HPGe detector for flowing sample neutron activation analysis

Quality evaluation of the k 0-standardized neutron activation analysis at the Dalat research reactor

Determination of Cobalt in Seawater Using Neutron Activation Analysis after Preconcentration by Adsorption ontoγ-MnO2Nanomaterial

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Determination of Cobalt in Seawater Using Neutron Activation Analysis after Preconcentration by Adsorption ontoγ-MnO₂Nanomaterial