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The role of neutrinos in explosive nucleosynthesis

Fröhlich, Carla and Liebendörfer, M. and Thielemann, F. -K. and Martinez Pinedo, G. and Langanke, K. and Zinner, N. T. and Hix, W. R. and Bravo, E.. (2006) The role of neutrinos in explosive nucleosynthesis. In: International symposium on nuclear astrophysics - Nuclei in the cosmos. Trieste, Italy, p. 33.

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Official URL: http://edoc.unibas.ch/dok/A5253787

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Abstract

We present a new primary nucleosynthesis process, the # p-process, occurring in supernovae (and possibly gamma-ray bursts) when strong neutrino fluxes create proton-rich ejecta. In this process, antineutrino absorptions in the proton-rich environment produce neutrons that are immediately captured by neutron-deficient nuclei. The capture of these neutrons permits to overcome the long beta-decay lifetimes of proton-rich nuclei like 64 Ge, allowing the nucleosynthesis flow to proceed to nuclei with mass numbers A < 64. This process is a possible candidate to explain the origin of the solar abundances of the light p-nuclei (such as 92,94 Mo and 96,98 Ru) and also offers a natural explanation for the large abundance of Sr (and other elements beyond Fe) seen in the very early stage of the galactic evolution.
Faculties and Departments:05 Faculty of Science > Departement Physik > Former Organization Units Physics > Astrophysik (Liebendörfer)
05 Faculty of Science > Departement Physik > Physik > Theoretische Physik Astrophysik (Thielemann)
UniBasel Contributors:Liebendörfer, Matthias and Fröhlich, Carla and Thielemann, Friedrich-Karl
Item Type:Conference or Workshop Item, refereed
Conference or workshop item Subtype:Conference Paper
Bibsysno:Link to catalogue
Publisher:Proceedings of Science
Note:Publication type according to Uni Basel Research Database: Conference paper
Last Modified:04 Sep 2015 14:31
Deposited On:22 Mar 2012 13:56

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