Neutron cross sections in stellar nucleosynthesis: Study of the key isotope 25Mg

Mingrone, F. (2014) Neutron cross sections in stellar nucleosynthesis: Study of the key isotope 25Mg. Il nuovo cimento C, 37 (4). pp. 9-18. ISSN 1826-9885

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Abstract

In this document the important role of 25Mg within nucleosynthesis processes is studied. In fact the initial conditions of s-process in massive and AGB stars depend on neutron-induced reactions on 25Mg, being this isotope involved both in neutron production and as a neutron poison. Because of the importance of 25Mg, very accurate and precise measurements of its capture cross section, at the n TOF CERN facility, and of its total cross section, at the EC-JRC-IRMM facility in Belgium, were performed. The aims of these measurements are both to weight the contribution of 25Mg as a neutron poison and to give constraints for the reaction rate of one of the main neutron sources for the s-process.

Item Type: Article
Uncontrolled Keywords: Hydrostatic stellar nucloesynthesis: s-process ; Nuclear engineering and nuclear power studies: Neutron capture γ-rays ; Nucleon-induced reactions: Radiative capture ; Spectrometers and spectroscopy techniques: Neutron spectroscopy
Subjects: 500 Scienze naturali e Matematica > 530 Fisica
Depositing User: Marina Spanti
Date Deposited: 19 May 2020 15:52
Last Modified: 19 May 2020 15:52
URI: http://eprints.bice.rm.cnr.it/id/eprint/18630

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