Activation measurements of neutron capture cross sections at various temperatures

  • About 50% of the elements heavier than iron are produced during the slow neutron capture process. This process occurs in different stellar sites at various energies. To understand the ongoing nucleosynthesis, the probability of a neutron capture for different temperatures and therefore for different stellar sites is essential. Activation experiments using the 7Li(p,n) reaction as neutron source were performed. At a temperature of kBT = 25 keV the cross sections were determined for 27Al, 37Cl and 41K. A new method was developed to perform activation experiments at even lower temperatures. For a proof of principle, the cross section for 64Ni was measured at kBT = 25 keV as well as for kBT = 6 keV. To study the impact of isomeric states at higher energies, activations of 181Ta were performed using two different proton energies.

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Author:Tanja HeftrichGND, Mario WeigandORCiDGND, Kafa Al-Khasawleh, Benjamin BrücknerORCiDGND, Sophia Dellmann, Ozan Can Dogan, Asmaa El Mard, Philipp ErbacherGND, Fabian Habermehl, Benedict Heybeck, Madeleine Margaux Gail, Kathrin GöbelORCiDGND, Timo KisselbachORCiD, Cem Deniz KurtulgilGND, Markus Reich, René ReifarthORCiD, Silas Sheriff, Meiko VolknandtORCiDGND
Parent Title (English):EPJ Web of Conferences
Publisher:EDP Sciences
Place of publication:Les Ulis
Document Type:Article
Date of Publication (online):2022/02/24
Date of first Publication:2022/02/24
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Contributing Corporation:The 16th International Symposium on Nuclei in the Cosmos (NIC-XVI)
Release Date:2022/09/28
Page Number:3
Institutes:Physik / Physik
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
Licence (German):License LogoCreative Commons - Namensnennung 4.0