Search Results - "Wätjen U."

Critical remarks on gross alpha/beta activity analysis in drinking waters: Conclusions from a European interlaboratory comparison by Jobbagy, V, Meresova, J, Waetjen, U

“…The most common gross alpha/beta standard methods used for drinking water analysis are discussed, and sources of interferences are reviewed from a metrological…”
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Determination of natural and anthropogenic radionuclides in soil—results of an European Union comparison by Merešová, J., Wätjen, U., Altzitzoglou, T.

“…A comparison was organised by the Institute for Reference Materials and Measurements (IRMM) among 73 environmental radioactivity monitoring laboratories for…”
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Results of an EC laboratory comparison on 40K, 90Sr and 137Cs in dried bilberry powder by Merešová, J., Wätjen, U.

“…The evaluation is presented of a laboratory comparison (LC) on 90Sr, 40K and 137Cs in dried bilberries organised in 2011 by the IRMM. The activity…”
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“Realisation of the becquerel”—reducing the impact of equipment failure by Suliman, G., Paepen, J., Wätjen, U.

“…The goal of the CCRI(II) “Realisation of the becquerel” project is to design a reproducible radioactivity standard which will increase the robustness of the…”
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Results of an international comparison for the determination of radionuclide activity in bilberry material by Wätjen, U., Altzitzoglou, T., Ceccatelli, A., Dikmen, H., Emteborg, H., Ferreux, L., Frechou, C., La Rosa, J., Luca, A., Moreno, Y., Oropesa, P., Pierre, S., Schmiedel, M., Spasova, Y., Szántó, Z., Szücs, L., Wershofen, H., Yücel, Ü.

“…Radioactivity found in wild food products has assumed greater importance when assessing the total exposure of the population. For this reason, IRMM has been…”
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Measurement comparisons of radioactivity among European monitoring laboratories for the environment and food stuff by Wätjen, U., Spasova, Y., Altzitzoglou, T.

“…For more than 15 years, European Union (EU) laboratories monitoring environmental radioactivity have been obliged to participate in measurement comparisons…”
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Ionising radiation metrology for the metallurgical industry by García-Toraño E., Tzika F., Burda O., Peyrés V., Mejuto M., Crespo T., Wätjen U., Arnold D., Sochor V., Svec A., Carconi P., de Felice P., Tecl J.

“…Every year millions tons of steel are produced worldwide from recycled scrap loads. Although the detection systems in the steelworks prevent most orphan…”
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EC comparison on the determination of 226Ra, 228Ra, 234U and 238U in water among European monitoring laboratories by Wätjen, U., Benedik, L., Spasova, Y., Vasile, M., Altzitzoglou, T., Beyermann, M.

“…In anticipation of new European requirements for monitoring radioactivity concentration in drinking water, IRMM organized an interlaboratory comparison on the…”
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Sequential determination of 210Po and uranium radioisotopes in drinking water by alpha-particle spectrometry by Benedik, L., Vasile, M., Spasova, Y., Wätjen, U.

“…Procedures for the sequential determination of low level 210Po and uranium radioisotopes in drinking water by alpha-particle spectrometry are presented. After…”
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226Ra and 228Ra determination in mineral waters—Comparison of methods by Vasile, M., Benedik, L., Altzitzoglou, T., Spasova, Y., Wätjen, U., González de Orduña, R., Hult, M., Beyermann, M., Mihalcea, I.

“…A comparison of different radiochemical separation procedures and measurement techniques used to determine the activity concentration of 226Ra and 228Ra in…”
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Uncertainty budget for Ion Beam Analysis by Sjöland, K.A, Munnik, F, Wätjen, U

“…In the `Guide to the expression of uncertainty in measurement' (GUM), guidelines for the evaluation of the total uncertainty of an experiment are outlined in a…”
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Certification of the reference material IRMM-426 for radionuclides in dried bilberries by Wätjen, U., Spasova, Y., Vasile, M., Szántó, Z., Emteborg, H., Voitsekhovych, O.

“…A new reference material for the activity concentration of 137Cs, 40K and 90Sr in a dried berry matrix was certified from a batch of bilberries collected in…”
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Antimony implanted in silicon – A thin layer reference material for surface analysis by Ecker, K.H, Berger, A, Grötzschel, R, Persson, L, Wätjen, U

“…A reference material has been produced which can be used for the calibration of surface and near-surface analytical methods like secondary ion mass…”
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Using microprobe distribution maps to determine homogeneity and correlation between elements by Munnik, F, Sjöland, K.A, Wätjen, U

“…Microprobe elemental maps can be manipulated in several ways to extract information. In this paper we show two methods of obtaining information. One method…”
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Nuclear microprobe study of metal segregation in quaternary bronze by Munnik, F, Sjöland, K.A, Vittiglio, G, Ingelbrecht, C, Wätjen, U

“…A quaternary bronze was prepared as part of a project for certification of reference materials, simulating the composition of archaeological artefacts. A…”
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100 Years of radionuclide metrology by Judge, S.M., Arnold, D., Chauvenet, B., Collé, R., De Felice, P., García-Toraño, E., Wätjen, U.

“…The discipline of radionuclide metrology at national standards institutes started in 1913 with the certification by Curie, Rutherford and Meyer of the first…”
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Comparative study of RBS, SIMS and VASE for characterisation of high electron mobility transistors by Persson, L, Lövestam, N.G, Södervall, U, Wätjen, U

“…The investigated devices consist of InGaAs/InAlAs multilayer films grown by molecular beam epitaxy on InP. Results from two samples with the same epitaxial…”
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Time-resolved pile-up compensation in PIXE analysis with list-mode collected data by Sjöland, K.A, Munnik, F, Chaves, C, Wätjen, U

“…In order to improve the accuracy of the PIXE analysis with respect to the pile-up problem, a technique to analyse PIXE spectrums suffering from pile-up has…”
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Current radioactivity content of wild edible mushrooms: A candidate for an environmental reference material by Szanto, Zs, Hult, M, Watjen, U, Altzitzoglou, T

“…The paper presents the results of radiological investigation of several mushroom samples collected in the fall of 2004 in different parts of Europe. The work…”
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European measurement comparison of Cs, K and Sr in milk powder by Spasova, Y, Watjen, U, Altzitzoglou, T

“…Recently, the Institute for Reference Materials and Measurements (IRMM) has assumed responsibility for organizing regular measurement comparisons among those…”
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