Supernova-Produced ^{53}Mn on Earth

Autor: G, Korschinek, T, Faestermann, M, Poutivtsev, A, Arazi, K, Knie, G, Rugel, A, Wallner

Publikováno v: Physical review letters. 125(3)

For the time period from 1.5 to 4 Myr before the present we found in deep ocean ferromanganese crusts a ^{53}Mn excess concentration in terms of ^{53}Mn/Mn of about 4×10^{-14} over that expected for cosmogenic production. We conclude that this ^{53}

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::6c5ac992da6f2b4792507641872a0c9b
https://pubmed.ncbi.nlm.nih.gov/32745435

A multi-radionuclide approach for in situ produced terrestrial cosmogenic nuclides: 10Be, 26Al, 36Cl and 41Ca from carbonate rocks

Autor: Alfred Dewald, Thomas Faestermann, Georg Rugel, K.-O. Zell, Pierre Rochette, Robert C. Finkel, Jozef Masarik, Gunther Korschinek, Didier Bourlès, Lucilla Benedetti, Régis Braucher, Silke Merchel, M. Poutivtsev

Publikováno v: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 268:1179-1184

In contrary to siliceous environments, there is a severe lack of cosmogenic nuclides, that can be used for in situ dating of calcareous environments. Thus, we have investigated other nuclides than 36 Cl as possible dating tools by cross-calibration.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::21b5f2b02d5361e5eae18b451e8a18c4
https://doi.org/10.1016/j.nimb.2009.10.128

Measurement of (n,γ) reaction cross sections at stellar energies for 58Ni and 78Se

Autor: Matthias Heil, Anton Wallner, I. Dillmann, Georg Rugel, F. Käppeler, Klaus Knie, Walter Kutschera, T. Faestermann, M. Poutivtsev, Gunther Korschinek

Publikováno v: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 259:683-687

The energy averaged ( n , γ ) cross sections of 58 Ni and 78 Se at a stellar energy of kT = 25 keV have been investigated with the so called activation technique, which represents a well established tool for measurements of stellar neutron cross sec

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d1ad56550b4a75bc8d14aa0242e4dc51
https://doi.org/10.1016/j.nimb.2007.01.206

Attempt to detect primordial244Pu on Earth

Autor: Christoph Lierse von Gostomski, Andreas Türler, Udo Gerstmann, M. Poutivtsev, Iris Dillmann, Georg Rugel, J. Lachner, Gunther Korschinek, Thomas Faestermann

Publikováno v: Physical Review C. 85

With a half-life of 81.1$\phantom{\rule{0.16em}{0ex}}$Myr, ${}^{244}$Pu could be both the heaviest and the shortest-lived nuclide present on Earth as a relic of the last supernova(e) that occurred before the formation of the Solar System. Hoffman et

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::64b4724f15948dcb196334134b7071e2
https://doi.org/10.1103/physrevc.85.015801

Solving the stellar 62Ni problem with AMS

Autor: S. Walter, F. Käppeler, R. Schwengner, Andreas Wagner, M. Poutivtsev, J. Lachner, Georg Rugel, Arnd R. Junghans, Moumita Maiti, Iris Dillmann, T. Faestermann, C. Nair, M. Erhard, Gunther Korschinek

Publikováno v: Nuclear Instruments and Methods in Physics Research B 268(2010), 1283
AMS-11-THE 11th International Conference on Accelerator Mass Spectrometry, 14.-19.09.2008, Roma, ItalyNuclear Instruments and Methods in Physics Resarch B: Elsevier

An accurate knowledge of the neutron capture cross sections of 62,63Ni is crucial since both isotopes take key positions which affect the whole reaction flow in the weak s process up to A=90. No experimental value for the 63Ni(n,gamma) cross section

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ca7d3b7fd8cac0c6b5d23c68609ed108
https://www.hzdr.de/publications/Publ-11930-2