Frankfurt 2014 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 54: Nukleare Astrophysik
HK 54.2: Vortrag
Freitag, 21. März 2014, 11:30–11:45, HZ 4
Study of the 17Ne Coulomb Dissociation process and its role for the rp process of nucleosynthesis. — •Justyna Marganiec1,2, Felix Wamers2,1,3,5, Thomas Aumann1,3, Irina Egorova6, Leonid Grigorenko7,8, Michael Heil3, Yuliya Perfenova7,9, and Ralf Plag3,4 for the R3B collaboration — 1TU Darmstadt, Germany — 2EMMI, GSI Darmstadt, Germany — 3GSI Darmstadt, Germany — 4Goethe-Universitaet, Frankfurt am Main, Germany — 5FIAS, Frankfurt am Main, Germany — 6BLTP JINR Dubna, Russia — 7FLNR JINR Dubna, Russia — 8RRC KI, Moscow, Russia — 9INP, Moscow, Russia
The study of 17Ne Coulomb dissociation process gives us a possibility to study the time-reversed reaction 15O(2p,gamma)17Ne, with the detailed balance theorem. This reaction could serve as a bypass of 15O waiting point during the rp process, and move the initial CNO material towards heavier nuclei.
The two-proton capture can proceed sequentially or directly from the three-body continuum. And the reaction rate can be enhanced by a few orders of magnitude by taking the three-body continuum into account. The Coulomb dissociation method is the one way to experimentally determine the three-body radiative capture cross section, which is needed to verify theoretical calculations, and which was not experimentally determined yet. The experiment has been performed at the LAND/R3B setup at GSI.
This project is supported by NAVI, GSI-TU Darmstadt cooperation, HIC for FAIR, EMMI and BMBF.