Contribution of an interlaboratory comparison to the certification of the STAM/IRMM-0243 243Am reference material

Crozet, Marielle; Roudil, D.; Maillard, Christophe; Rivier, Cédric; Rozle, Jakopic; Fankhauser, Adelheid; Yetunde, Aregbe; Stephan, Richter

doi:10.1007/s10967-018-06404-6

Cited by 3 publications

(9 citation statements)

References 7 publications

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“…The contribution of the impurities to the total activity was measured as 0.19 (2) %. This fraction is consistent with the value 0.21 (1) % derived from the interlaboratory comparison [19].…”

Section: Specific Activity Methodssupporting

confidence: 91%

“…The resulting absolute amount contents and relative isotope fractions are provided in Table 1. The values are confirmed by an interlaboratory comparison organised by CEA/CETAMA using IRMM-0243/STAM as the test sample in the context of the certification of the 243 Am spike [19].…”

Section: Mass Metrologymentioning

confidence: 55%

“…The solution was allowed enough time to homogenise before being dispensed into pre-cleaned screw-cap ampoules. In total, 587 units were prepared, each unit containing approximately 5 µg of americium in 1 M nitric acid solution [16,19]. Out of the produced units, eighteen were selected for the characterisation of the material.…”

Section: Materials Productionmentioning

confidence: 99%

“…Recently, the Joint Research Centre (JRC) and the Commissariat à l'énergie atomique et aux énergies alternatives (CEA) have collaborated in the production and certification of an 243 Am reference material for the quantification of Am in an unknown sample by isotope dilution mass spectrometry (IDMS) [16][17][18][19]. This responds to a pressing need in the fields of nuclear safeguards and security, nuclear forensics, and accountability in the nuclear fuel cycle [20,21].…”

Section: Introductionmentioning

confidence: 99%

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Absolute and relative measurement of the 243Am half-life

Marouli

Pommé

Jobbágy

et al. 2020

J Radioanal Nucl Chem

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The half-life of 243Am has been measured by an absolute and a relative method, i.e. by determining the specific activity of 243Am and the specific activity ratio with 241Am. A mixed 241,243Am reference material was produced and certified for its americium mass content and its isotope amount ratios. The characterisation of the mass content of 243Am was established by isotope dilution mass spectrometry using an 241Am spike, produced from highly enriched 241Pu material. The isotope amount ratios n(241Am)/n(243Am) and n(242mAm)/n(243Am) were measured by thermal ionisation mass spectrometry. Activity measurements were performed by alpha-particle counting at a defined solid angle, as well as high-resolution alpha-particle spectrometry. From the 243Am/241Am activity and isotopic amount ratios, a value of 16.988 (24) was derived for the 243Am/241Am half-life ratio. Using a value of 432.6 (6) a for the 241Am half-life, the corresponding 243Am half-life value, 7349 (15) a, is in good agreement with the result obtained from the absolute method, 7342 (14) a. The mean value, 7345 (14) a, agrees well with data from literature and lowers the relative standard uncertainty to 0.2%.

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Section: Specific Activity Methodssupporting

confidence: 91%

Section: Mass Metrologymentioning

confidence: 55%

Section: Materials Productionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Absolute and relative measurement of the 243Am half-life

Marouli

Pommé

Jobbágy

et al. 2020

J Radioanal Nucl Chem

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“…Radiometric techniques were used as independent confirmation measurements. In parallel to the certification process and prior to release of the material's certificate, an interlaboratory comparison (ILC) was organised by the CEA's Commission d'ETAblissement des Méthodes d'Analyse (CETAMA) using this reference material as the test sample [15].…”

Section: Introductionmentioning

confidence: 99%

243Am certified reference material for mass spectrometry

Rozle

Fankhauser

Yetunde

et al. 2021

J Radioanal Nucl Chem

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The Joint Research Centre, in cooperation with the Commissariat à l’Energie Atomique et aux Energies Alternatives, produced a novel 243Am spike reference material for mass spectrometry. Americium solution with an isotopic composition of 88% 243Am and 12% 241Am was used as the source for the preparation of the spike material. The certified value of 5.696 (11) nmol g−1 for the amount content of 243Am and 0.136138 (54) for the n(241Am)/n(243Am) amount ratio were assigned. The assigned values from mass spectrometry were confirmed by alpha-particle spectrometry, alpha-particle counting at a defined solid angle, and high-resolution gamma-ray spectrometry. Furthermore, an external validation of the certified values was obtained from the results of an interlaboratory comparison exercise, using this americium reference solution as the test sample.

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