Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Frank Bruhn"'
Rafter radiocarbon sample preparation and data flow: Accommodating enhanced throughput and precision
Autor:
Frank Bruhn, W. T. Baisden, Christine Prior, Albert Zondervan, Silvia Canessa, Andy Phillips, Chanda Bertrand, Jocelyn Turnbull, D. Chambers, J. Kaiser
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 294:194-198
New Zealand’s National Isotope Centre, including the Rafter Radiocarbon Laboratory, has upgraded its AMS system from a 6 MV EN-Tandem AMS to a new generation 0.5 MV NEC Extended Compact AMS (XCAMS) system. Current precisions represent approximately
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9e7118e12c6ad91a0791a2778cfc195f
https://doi.org/10.1016/j.nimb.2012.07.014
https://doi.org/10.1016/j.nimb.2012.07.014
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 294:1-4
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0c5bf12fb8f1d7a71792becc94db92e9
https://doi.org/10.1016/j.nimb.2012.11.008
https://doi.org/10.1016/j.nimb.2012.11.008
Publikováno v:
Radiocarbon. 49:1093-1102
We are developing practical methodologies to characterize pool sizes and residence times for fractions of soil organic matter (SOM) using radiocarbon, with a particular focus on SOM in New Zealand pasture soils that responds to global change on decad
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4257aa53185ec10da7842a40b631eb56
https://doi.org/10.1017/s0033822200042946
https://doi.org/10.1017/s0033822200042946
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 231:518-523
We have collected rock samples from the abandoned Konrad iron ore mine near Salzgitter/Germany, to elucidate the diagenetic history of the Korallenoolith formation in northwestern Germany. Petrographic and cathodoluminescence investigations showed th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ace1f2243b3492158ca2b45c58b4b90a
https://doi.org/10.1016/j.nimb.2005.01.110
https://doi.org/10.1016/j.nimb.2005.01.110
Autor:
M. J. Nadeau, Pieter Meiert Grootes, Janet Rethemeyer, Gerd Gleixner, C. Kramer, Nils Andersen, Frank Bruhn
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. :521-527
Accelerator mass spectrometry (AMS) radiocarbon measurements were used to investigate the heterogeneity of organic matter in soils of agricultural long-term trial sites in Germany and Great Britain. The strong age heterogeneity of the soil organic ma
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ae3cbca561010b73780c1ee3b45a1b41
https://doi.org/10.1016/j.nimb.2004.04.098
https://doi.org/10.1016/j.nimb.2004.04.098
Autor:
Peter Hasselberg, C. Matthias Hüls, Pieter Meiert Grootes, Frank Bruhn, Marie-Josée Nadeau, Helmut Erlenkeuser
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. :709-715
Iron is combusted with Cu x O as an oxygen donor in a sealed quartz tube to extract its carbon for radiocarbon dating. We used “modern” iron and steel samples with carbon contents between 0.07% and 3.8%, to test the efficiency of carbon extractio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::867a2fea5be1891e67026076bad07c36
https://doi.org/10.1016/j.nimb.2004.04.132
https://doi.org/10.1016/j.nimb.2004.04.132
Autor:
Marie-Josée Nadeau, Pieter Meiert Grootes, Frank Bruhn, Antje H L Voelker, Angelika Oriwall, Alexander Duhr
Publikováno v:
Radiocarbon. 43:169-176
Measurements of the radiocarbon concentration of several carbonate background materials, either mineral (IAEA C1 Carrara marble and Icelandic double spar) or biogenic (foraminifera and molluscs), show that the apparent ages of diverse materials can b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::05162f451db7131511743d4a1a5a5642
https://doi.org/10.1017/s0033822200037978
https://doi.org/10.1017/s0033822200037978
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 172:228-234
Measurements of Pb and S isotopes with precision of better than 1 permil have been achieved using AUSTRALIS (A.M.S. for Ultra Sensitive TRAce eLement and Isotopic Studies), a microbeam AMS system based on a 3 MV Tandetron at the HIAF laboratory. The
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::971942f4a13c0d126c98c97f5a440cd2
https://doi.org/10.1016/s0168-583x(00)00115-4
https://doi.org/10.1016/s0168-583x(00)00115-4
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 158:201-208
An AMS system incorporating a microbeam Cs source has been developed at the CSIRO HIAF laboratory in Sydney. The system, known as AMS for Ultra Sensitive TRAce eLement and Isotopic Studies (AUSTRALIS), is designed to perform in situ microanalysis for
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b772fcd3754c3ec7423261efbec03770
https://doi.org/10.1016/s0168-583x(99)00353-5
https://doi.org/10.1016/s0168-583x(99)00353-5
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 158:616-620
Proton Induced X-ray Emission (PIXE) analyses using the proton microprobe have been performed to obtain precise concentrations of major and trace elements in a range of monazite samples. With the proton microprobe, detection limits for U, Th and Pb a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dcb81cb6d0ffc8253fadb068c3b8e73b
https://doi.org/10.1016/s0168-583x(99)00385-7
https://doi.org/10.1016/s0168-583x(99)00385-7