Single-comparator methods in reactor neutron activation analysis

Simonits, A.; Corte, F. De; Hoste, J.

doi:10.1007/bf02514380

Cited by 258 publications

(78 citation statements)

References 17 publications

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“…7 In INAA, the k 0 single comparator approach was applied. 11 However, this is not applicable in IPAA since some of the required atomic data of the elements and several parameters of the activating photon source used (particularly linear accelerators as used in this work) cannot be defined with sufficient precision. Hence, currently in the BAM PAA laboratory feasibility studies are performed concerning the use of comparatively small masses of reference materials and extrapolation of the values obtained to the actual sample size.…”

Section: Flux Density Gradients Of the Activating Photon Beammentioning

confidence: 99%

The problem of large samples: An activation analysis study of electronic waste material

Segebade

Bode

Goerner

2007

J Radioanal Nucl Chem

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Large-volume instrumental photon activation analysis (IPAA) was used for the investigation of shredded electronic waste material. Sample masses from 1 to 150 grams were analyzed to obtain an estimate of the minimum sample size to be taken to achieve a representativeness of the results which is satisfactory for a defined investigation task. Furthermore, the influence of irradiation and measurement parameters upon the quality of the analytical results were studied. Finally, the analytical data obtained from IPAA and instrumental neutron activation analysis (INAA), both carried out in a large-volume mode, were compared. Only parts of the values were found in satisfactory agreement.

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Section: Flux Density Gradients Of the Activating Photon Beammentioning

confidence: 99%

The problem of large samples: An activation analysis study of electronic waste material

Segebade

Bode

Goerner

2007

J Radioanal Nucl Chem

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“…No other technique offers such a high level of sensitivity and accuracy as provided by NAA [13]. The k 0 concept [14,15], introduced during 1970s, is a standardless quantification approach and today it has become a reliable analytical tool adopted by many laboratories. The k 0 -standardization requires an accurate characterization of irradiation and counting facilities and the use of composite nuclear constants *Author for correspondence (E-mail: mwasim@pinstech.org.pk).…”

Section: Introductionmentioning

confidence: 99%

Quantitative analysis of ancient Chinese ceramic using k ₀-instrumental neutron activation analysis

Wasim¹,

Arif

Zaidi

et al. 2008

Radiochimica Acta

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Summary. IAEA-CU-2006-06 (ancient Chinese ceramic) has been analyzed by k 0 -INAA and the results for 31 elements are reported. Measurement on Si was done via the (n, p) reaction. The results of 23 elements are within ±10% of the target values and for 2 elements data are reported as information values. The results produce lower relative deviation if compared with the mean reported concentration values submitted by the laboratories participating in the proficiency test. The analysis involves full peak efficiency calibration of the HPGe detector for all counting geometries and characterization of neutron flux at the irradiation channel by determining thermal to epithermal flux ratio and epithermal flux shape factor using Au and Zr flux monitors. The u-score is less than 1 for majority of the elements.

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“…where the ,Au o k factor is a compound nuclear constant of the nuclide in the sample of material with respect to Au [14] Au M = atomic mass of gold, Table 5.…”

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confidence: 99%

Determination of α in the Cadmium Lined Irradiation Channel of the NIRR-1 for Use in <i>k<sub>o</sub></i>-ENAA

Sheyin¹,

Oladipo²,

Jonah³

et al. 2015

WJNST

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The epithermal neutron shape factor (α) was determined in the permanent cadmium lined irradiation channel installed in the large outer irradiation site of the Nigeria Research Reactor-1 (NIRR-1) by the cadmium covered multimonitor method using the monitors Al-0.1% Au, Zr and Zn thin foils and Mo thin wire and was found to be −0.137 ± 0.018. The high negative value of α indicates a hardened epithermal neutron spectrum in the cadmium lined irradiation channel. The α value obtained was used in the single comparator method of ENAA (ko-ENAA) for the determination of the concentrations of elements in the standard reference material NIST 1515 Apple leaves using Al-0.1% Au thin foil as the single comparator. The concentrations of the elements Sm and Br were determined in the NIST 1515 Apple leaves because of their high Qo values and are in good agreement with the certified values.

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Single-comparator methods in reactor neutron activation analysis

Cited by 258 publications

References 17 publications

The problem of large samples: An activation analysis study of electronic waste material

The problem of large samples: An activation analysis study of electronic waste material

Quantitative analysis of ancient Chinese ceramic using k ₀-instrumental neutron activation analysis

Determination of α in the Cadmium Lined Irradiation Channel of the NIRR-1 for Use in <i>k<sub>o</sub></i>-ENAA

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Single-comparator methods in reactor neutron activation analysis

Cited by 258 publications

References 17 publications

The problem of large samples: An activation analysis study of electronic waste material

The problem of large samples: An activation analysis study of electronic waste material

Quantitative analysis of ancient Chinese ceramic using k 0-instrumental neutron activation analysis

Determination of α in the Cadmium Lined Irradiation Channel of the NIRR-1 for Use in &lt;i&gt;k&lt;sub&gt;o&lt;/sub&gt;&lt;/i&gt;-ENAA

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Quantitative analysis of ancient Chinese ceramic using k ₀-instrumental neutron activation analysis

Determination of α in the Cadmium Lined Irradiation Channel of the NIRR-1 for Use in <i>k<sub>o</sub></i>-ENAA