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Akademický článek

Nanoscale stress distributions and microstructural changes at scratch track cross-sections of a deformed brittle-ductile CrN-Cr bilayer

Autor: M. Meindlhumer, J. Zalesak, W. Ecker, M. Rosenthal, S. Niese, P. Gawlitza, H. Hruby, C. Mitterer, R. Daniel, J. Keckes, J. Todt

Publikováno v: Materials & Design, Vol 195, Iss , Pp 109023- (2020)

In order to interpret the mechanical response of thin films subjected to scratch tests, it is necessary to elucidate local stress distributions and microstructural changes accompanying deformation across the scratch track area. Here, 50 nm synchrotro

Externí odkaz: https://doaj.org/article/fecea217d99946079bffc600946c7be5

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Akademický článek

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Measurements of fast neutrons above ground and in 47 m depth with a 3He proportional counter

Autor: S. Niese

Publikováno v: Journal of Radioanalytical and Nuclear Chemistry. 272:173-176

Neutrons contribute to the background of low radioactivity measurements, especially with detectors in large lead shields above ground, and to a lower extent in underground laboratories of medium depth. We measured the natural neutron flux in the ener

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2899d247e10a7870588717992376c36c
https://doi.org/10.1007/s10967-006-6811-6

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George de Hevesy (1885–1966), founder of Radioanalytical Chemistry

Autor: S. Niese

Publikováno v: Czechoslovak Journal of Physics. 56:D3-D11

George de Hevesy has founded Radioanalytical Chemistry and Nuclear Medicine, discovered the element hafnium and first separated stable isotopes. For all these different important achievements he was nominated for the Nobel Prize. On occasion of his d

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::739086415b7bf29fca2777d4fc1e305c
https://doi.org/10.1007/s10582-006-0482-y

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Simultaneous determination of Ra and Th nuclides, 238U and 227Ac in uranium mining waters by γ-ray spectrometry

Autor: M. Köhler, B. Gleisberg, U. Jenk, S. Niese, K. Nindel

Publikováno v: Applied Radiation and Isotopes. 52:717-723

For the investigation of flooding processes in uranium mines, Ra and Th nuclides as well as 238U and 227Ac activities in waters were simultaneous analyzed by gamma-ray spectrometry. The activities of 227Ac and 228Th, not directly determinable by gamm

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1e1f5b1467b95e117f7a6bd72436bd48
https://doi.org/10.1016/s0969-8043(99)00235-3

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Akademický článek

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Application of low-level counting techniques for the investigation of the impact of uranium mining as well as remediation on the environment

Autor: S. Niese

Publikováno v: Applied Radiation and Isotopes. 47:1109-1112

A chamber with a shield of steel and lead of a total surface density of 365 g cm −2 for low-level measurements has been installed within a cave at an old brewery named ‘Felsenkeller’ in the Weisseritz-valley near Dresden. In the 45 m deep under

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9c03694f55b90d90969dc2473cf61e39
https://doi.org/10.1016/s0969-8043(96)00114-5

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Scaling factors for activated corrosion products in low-level-wastes from power reactors

Autor: W. Boden, S. Niese

Publikováno v: Journal of Radioanalytical and Nuclear Chemistry Articles. 198:161-167

Long-lived isotopes of corrosion products are very important for the disposal of low-level radioactive wastes. These nuclides serve for risk calculations of accidents. Their determination needs the radiochemical separation from high active main nucli

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d085aa1084ec2f9eea599972dca48302
https://doi.org/10.1007/bf02038254

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Determination of radioisotopes of Ce, Eu, Pu, Am and Cm in low-level-wastes from power reactors

Autor: B. Gleisberg, S. Niese

Publikováno v: Journal of Radioanalytical and Nuclear Chemistry Letters. 200:31-41

Long-lived isotopes of lanthanides and actinides are very important for the disposal of low-level radioactive wastes. These nuclides serve for risk calculations of accidents. Their determination requires radiochemical separation from high activity ma

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d13b1db7de97c45c99cc6dfc1900360a
https://doi.org/10.1007/bf02164819

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Improved Scanning Geometry to Collect 3D-Geometry Data in Flat Samples

Autor: P. Krüger, S. Niese, E. Zschech, J. Gelb, M. Feser, Ian McNulty, Catherine Eyberger, Barry Lai

Publikováno v: AIP Conference Proceedings.

3D integration through silicon technology of integrated circuits challenges non‐destructive testing methods. 3D x‐ray methods are the techniques of choice to localize defects in interconnects. The development of high‐power x‐ray sources enabl

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5f9a672cf8a114939e8d6a4c2905aba0
https://doi.org/10.1063/1.3625353

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