A. Byelikov 1 , T. Adachi 2 , H. Fujita 3 , Y. Fujita 2 , A. Heger 4 , Y. Kalmykov 1 , K. Langanke 5 , G. Martínez-Pinedo 5 , PvNC 1 , R. Neveling 3 , A. Richter 1 , A. Shevchenko 1 , Y. Shimbara 2 , F.D. Smit 3 , A. Tamii 6 , S.E. Woosley 7 and M. Yosoi 6 1 TU Darmstadt, Germany — 2 Osaka University, Japan — 3 iThemba LABS, South Africa — 4 LANL, USA, 5 GSI Darmstadt, Germany — 6 RCNP Osaka, Japan — 7 UC Santa Cruz, USA Neutrino Nucleosynthesis of Exotic, Odd-Odd Nuclei 138 La and 180 Ta Peter von Neumann-Cosel Institut für Kernphysik, Technische Universität Darmstadt S-DALINAC TU DARMSTADT
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1 TU Darmstadt, Germany — 2 Osaka University, Japan — 3 iThemba LABS, South Africa —
TU DARMSTADT. S-DALINAC. Neutrino Nucleosynthesis of Exotic, Odd-Odd Nuclei 138 La and 180 Ta. Peter von Neumann-Cosel Institut für Kernphysik, Technische Universität Darmstadt. A. Byelikov 1 , T. Adachi 2 , H. Fujita 3 , Y. Fujita 2 , A. Heger 4 , Y. Kalmykov 1 , K. Langanke 5 , - PowerPoint PPT Presentation
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A. Byelikov1, T. Adachi2, H. Fujita3, Y. Fujita2, A. Heger4, Y. Kalmykov1, K. Langanke5,
G. Martínez-Pinedo5, PvNC1, R. Neveling3, A. Richter1, A. Shevchenko1,
Y. Shimbara2, F.D. Smit3, A. Tamii6, S.E. Woosley7 and M. Yosoi6
1TU Darmstadt, Germany — 2Osaka University, Japan — 3iThemba LABS, South Africa —
4LANL, USA, 5GSI Darmstadt, Germany — 6RCNP Osaka, Japan — 7UC Santa Cruz, USA
Neutrino Nucleosynthesis of Exotic, Odd-Odd Nuclei 138La and 180Ta
Peter von Neumann-Cosel Institut für Kernphysik, Technische Universität Darmstadt
S-DALINAC
TU DARMSTADT
Motivation
Neutrino nuclesynthesis of 138La and 180Ta
High resolution measurement of GT strength
Astrophysical implications
Outline
180Ta
138La
Exotic Nuclides
Nucleosynthesis of 138La
s-process r-process p-process
Production through Neutrino Processes
Neutral current reactions: 139La(,′n)138La 181Ta(,′n)180Ta
Charged current reactions: 138Ba(e,e)138La 180Hf(e,e)180Ta
Complete stellar evolution in massive stars with improved RPA calculations for -nucleus reactions
A. Heger et al., Phys. Lett. B 606 (2005) 258
138La: pure process production by cc reactions
Different Production Processes of 138La
180Ta: 50% process, 50% p process
Theoretical Prediction
Low neutrino energies small q L = 0 GT strength
RPA predicts main GT resonance well above neutron threshold Predictions for the low-lying strength are questionable