Výsledky vyhledávání - "Anthony D. Pollington"

Measuring signatures of fuel irradiation in large particle samples

Autor: Susan K. Hanson, Anthony D. Pollington

Publikováno v: Journal of Analytical Atomic Spectrometry. 36:1018-1027

Understanding the operating history of a nuclear facility is one of the key goals in nuclear safeguards, enabling the verification of declared activities. This is accomplished via a number of mechanisms, including the analysis of samples collected at

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::53c695684035ce8857b87030ab63f3d5
https://doi.org/10.1039/d1ja00025j

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New loading method for high precision Sm isotope analysis of nuclear materials using thermal ionization mass spectrometry

Autor: James Louis-Jean, Robert E. Steiner, Susan K. Hanson, Sean D. Reilly, Anthony D. Pollington, J. D. Inglis, Daniel Meininger

Publikováno v: Journal of Radioanalytical and Nuclear Chemistry. 327:317-327

This work demonstrates an analytical protocol for high precision Sm isotope analysis by thermal ionization mass spectrometry (TIMS) using a Pt activator. The method permits precise measurements of small aliquots (1–20 ng) of Sm on single Re filamen

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::22313c343a9af2cc8a9793ddc6a78c62
https://doi.org/10.1007/s10967-020-07513-x

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Experimental calibration of silicon and oxygen isotope fractionations between quartz and water at 250 °C by in situ microanalysis of experimental products and application to zoned low δ30Si quartz overgrowths

Autor: John W. Valley, Michael J. Spicuzza, R. Bastian Georg, Anthony D. Pollington, Lawrence M. Anovitz, Reinhard Kozdon

Publikováno v: Chemical Geology. 421:127-142

The interpretation of silicon isotope data for quartz is hampered by the lack of experimentally determined fractionation factors between quartz and fluid. Further, there is a large spread in published oxygen isotope fractionation factors at low tempe

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3cd4004eb41d427a9dffe784cfeb421a
https://doi.org/10.1016/j.chemgeo.2015.11.011

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Polyatomic interferences on high precision uranium isotope ratio measurements by MC-ICP-MS: applications to environmental sampling for nuclear safeguards

Autor: Susan K. Hanson, Anthony D. Pollington, William S. Kinman, Robert E. Steiner

Publikováno v: Journal of Radioanalytical and Nuclear Chemistry. 307:2109-2115

Modern mass spectrometry and separation techniques have made measurement of major uranium isotope ratios a routine task; however accurate and precise measurement of the minor uranium isotopes remains a challenge as sample size decreases. One particul

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ead34fdc4e5c26121303e814a4c003e7
https://doi.org/10.1007/s10967-015-4419-4

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Isolation of 163Ho from dysprosium target material by HPLC for neutrino mass measurements

Autor: W. A. Taylor, Todd E. Barnhart, Gerd Joachim Kunde, Michael W. Rabin, Francois M. Nortier, Robert J. Nickles, Jonathan W. Engle, Veronika Mocko, Anthony D. Pollington, Eva R. Birnbaum

Publikováno v: Radiochimica Acta. 103:577-585

The rare earth isotope 163Ho is of interest for neutrino mass measurements. This report describes the isolation of 163Ho from a proton-irradiated dysprosium target and its purification. A Dy metal target was irradiated with 16 MeV protons for 10 h. A

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7e226df1ff7f40e15b7c36a3bf899bca
https://doi.org/10.1515/ract-2014-2362

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