p-process nucleosynthesis via proton-capture reactions in thermonuclear supernovae explosions
Model calculations within the framework of the so-called γ process show an underproduction of the p nucleus with the highest isotopic abundace 92Mo. This discrepancy can be narrowed by taking into account the alternative production site of a type Ia supernova explosion. Here, the nucleus 92Mo can be...
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doaj-01debe722def49cdb43e5f71285788b12021-08-02T09:18:18ZengEDP SciencesEPJ Web of Conferences2100-014X2015-01-01930300710.1051/epjconf/20159303007epjconf_cgs2015_03007p-process nucleosynthesis via proton-capture reactions in thermonuclear supernovae explosionsEndres Anne0Arda C.1Erbacher P.2Glorius J.Göbel K.3Hinrichs O.4Mevius E.5Reich M.6Sonnabend K.7Thomas B.8Thomas T.9Institut für Angewandte Physik, Goethe Universität Frankfurt am MainInstitut für Angewandte Physik, Goethe Universität Frankfurt am MainInstitut für Angewandte Physik, Goethe Universität Frankfurt am MainInstitut für Angewandte Physik, Goethe Universität Frankfurt am MainInstitut für Angewandte Physik, Goethe Universität Frankfurt am MainInstitut für Angewandte Physik, Goethe Universität Frankfurt am MainInstitut für Angewandte Physik, Goethe Universität Frankfurt am MainInstitut für Angewandte Physik, Goethe Universität Frankfurt am MainInstitut für Angewandte Physik, Goethe Universität Frankfurt am MainInstitut für Angewandte Physik, Goethe Universität Frankfurt am MainModel calculations within the framework of the so-called γ process show an underproduction of the p nucleus with the highest isotopic abundace 92Mo. This discrepancy can be narrowed by taking into account the alternative production site of a type Ia supernova explosion. Here, the nucleus 92Mo can be produced by a sequence of proton-capture reactions. The amount of 92Mo nuclei produced via this reaction chain is most sensitive to the reactions 90Zr(p,γ) and 91Nb(p,γ). Both rates have to be investigated experimentally to study the impact of this nucleosynthesis aspect on the long-standing 92Mo-problem. We have already measured the proton-capture reaction on 90Zr using high-resolution in-beam γ-ray spectroscopy. In this contribution, we will present our preliminary results of the total cross sections as well as the partial cross sections. Furthermore, we plan to measure the 91Nb(p,γ) reaction soon. Due to the radioactive target material, the 91Nb nuclei have to be produced prior to the experiment. The current status of this production will be presented in this contribution.http://dx.doi.org/10.1051/epjconf/20159303007 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Endres Anne Arda C. Erbacher P. Glorius J. Göbel K. Hinrichs O. Mevius E. Reich M. Sonnabend K. Thomas B. Thomas T. |
spellingShingle |
Endres Anne Arda C. Erbacher P. Glorius J. Göbel K. Hinrichs O. Mevius E. Reich M. Sonnabend K. Thomas B. Thomas T. p-process nucleosynthesis via proton-capture reactions in thermonuclear supernovae explosions EPJ Web of Conferences |
author_facet |
Endres Anne Arda C. Erbacher P. Glorius J. Göbel K. Hinrichs O. Mevius E. Reich M. Sonnabend K. Thomas B. Thomas T. |
author_sort |
Endres Anne |
title |
p-process nucleosynthesis via proton-capture reactions in thermonuclear supernovae explosions |
title_short |
p-process nucleosynthesis via proton-capture reactions in thermonuclear supernovae explosions |
title_full |
p-process nucleosynthesis via proton-capture reactions in thermonuclear supernovae explosions |
title_fullStr |
p-process nucleosynthesis via proton-capture reactions in thermonuclear supernovae explosions |
title_full_unstemmed |
p-process nucleosynthesis via proton-capture reactions in thermonuclear supernovae explosions |
title_sort |
p-process nucleosynthesis via proton-capture reactions in thermonuclear supernovae explosions |
publisher |
EDP Sciences |
series |
EPJ Web of Conferences |
issn |
2100-014X |
publishDate |
2015-01-01 |
description |
Model calculations within the framework of the so-called γ process show an underproduction of the p nucleus with the highest isotopic abundace 92Mo. This discrepancy can be narrowed by taking into account the alternative production site of a type Ia supernova explosion. Here, the nucleus 92Mo can be produced by a sequence of proton-capture reactions. The amount of 92Mo nuclei produced via this reaction chain is most sensitive to the reactions 90Zr(p,γ) and 91Nb(p,γ). Both rates have to be investigated experimentally to study the impact of this nucleosynthesis aspect on the long-standing 92Mo-problem. We have already measured the proton-capture reaction on 90Zr using high-resolution in-beam γ-ray spectroscopy. In this contribution, we will present our preliminary results of the total cross sections as well as the partial cross sections. Furthermore, we plan to measure the 91Nb(p,γ) reaction soon. Due to the radioactive target material, the 91Nb nuclei have to be produced prior to the experiment. The current status of this production will be presented in this contribution. |
url |
http://dx.doi.org/10.1051/epjconf/20159303007 |
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