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HK: Hadronen und Kerne
HK 31: Nuclear Astrophysics II
HK 31.1: Talk
Tuesday, March 17, 1998, 14:00–14:15, G
Nuclear- and Astrophysical Interpretation of the Ca-Ti-Cr Isotopic Anomalies in the inclusion EK 1-4-1 of the Allende-Meteorite ∗ — •W. Böhmer1, K.-L. Kratz1, C. Freiburghaus2, T. Rauscher2, and F.-K. Thielemann2 — 1Inst. für Kernchemie, Universität Mainz, Germany — 2Inst. für Theoretische Physik, Universität Basel, Switzerland
In the framework of our investigation to explain the nucleosynthetic origin of the correlated Ca-Ti-Cr Isotopic Anomalies in the refractory inclusion EK 1-4-1 of the Allende Meteorite, beta-decay properties and deformation of the nuclear shape as well as neutron capture cross sections of neutron-rich isotopes in the N=28 region has been determined[1,2]. These nuclear data are important input parameters for r-process calculations in a complete reaction network. As astrophysical scenario a high entropy bubble at the edge of the core of a type II supernova was assumed. It will be shown that at serveral entropies between 1 and 200 kB/Baryon the observed Ca-Ti-Cr Anomalies can be reproduced.
[1] W. Böhmer, PhD-thesis (1996)
[2] T. Rauscher et al., Proceedings ENAM, Arles (1995) ∗ work supported by DFG (Kr 806/3) and the Swiss Nationalfonds