Heidelberg 2015 – wissenschaftliches Programm
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MS: Fachverband Massenspektrometrie
MS 13: Accelerator Mass Spectrometry and Applications 3
MS 13.5: Vortrag
Donnerstag, 26. März 2015, 18:15–18:30, PH/HS2
Determination of the Maxwellian averaged cross-section of the reaction 35Cl(n,γ)36Cl — •Stefan Pavetich1, Shavkat Akhmadaliev1, Iris Dillmann2, Shlomi Halfon3, Tanja Heftrich4, Franz Käppeler5, Claudia Lederer6, Martin Martschini7, Silke Merchel1, Michael Paul8, Rene Reifarth4, Georg Rugel1, Peter Steier7, Moshe Tessler8, Anton Wallner9, Mario Weigand4, and Leo Weissman3 — 1Helmholtz-Zentrum Dresden-Rossendorf, Germany — 2TRIUMF, Canada — 3Soreq Nuclear Research Center, Israel — 4Goethe Universität Frankfurt am Main, Germany — 5Karlsruhe Institut of Technology, Germany — 6University of Edinburgh, Scotland — 7Vienna Environmental Research Accelerator (VERA), Austria — 8Hebrew University of Jerusalem, Israel — 9Australian National University, Australia
Routine measurements of 36Cl at the Dresden Accelerator Mass Spectrometry (DREAMS) facility have resulted in an astrophysical application: the determination of the Maxwellian averaged cross-section (MACS) of the reaction 35Cl(n,γ)36Cl. As 35Cl acts as a neutron poison in the nucleosynthesis processes during later burning phases of stars, the reaction is important for astrophysical calculations of elemental abundances. The neutron irradiations with a quasi Maxwell Boltzmann spectrum for the production of 36Cl were performed at the Karlsruhe Institute of Technology and the Soreq Applied Research Accelerator Facility. AMS measurements were performed at VERA and DREAMS and are planned at the Australian National University in 2015. Acknowledgement: Alberto Mengoni, CERN.