Köln 2004 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe
HK: Physik der Hadronen und Kerne
HK 42: Nuclear and Particle Astrophysics III
HK 42.3: Vortrag
Donnerstag, 11. März 2004, 14:30–14:45, F
Supernova Inelastic Neutrino-Nucleus Cross Sections and Magnetic Dipole Response in Nuclei∗ — •P. von Neumann-Cosel1, A. Byelikov1, R.W. Fearick2, K. Langanke3, G. Martinéz-Pinedo4,5, and A. Richter1 — 1Institut für Kernphysik, Technische Universität Darmstadt, Germany — 2Department of Physics, University of Cape Twon, South Africa — 3Institute for Physics and Astronomy, University of Århus, Denmark — 4Institut d’Estudis Espacials de Catalunya, Edifici Nexus, Barcelona, Spain — 5Institució Catalana de Recerca i Estudis Avançats, Barcelona, Spain
Inelastic neutrino-nucleus scattering can make significant contributions to supernova dynamics and nucleosynthesis. Although it is not yet considered in supernova simulations, a clear call has been made to determine the relevant neutrino-nucleus cross sections, in particular on nuclei in the iron mass range A ∼ 56. It is demonstrated here that precision M1 data, obtained from high-resolution electron scattering for the spherical nuclei 50Ti, 52Cr and 54Fe, can be translated into inelastic total and differential neutrino-nucleus cross sections at supernova neutrino energies. The results agree well with large-scale shell model calculations, validating this model. Some data for a deformed case, 56Fe [1], where the relation is more complex, are also discussed.
[1] R.W. Fearick et al., Nucl. Phys. A 727 (2003) 41. ∗Supported by DFG, contracts SFB 634 and 445 SUA-113/6/0-1, South African FRD, Danish Research Council, Spanish MCyT, and EU ERDSF, contracts AYA2002-04094-C03-02 and AYA2003-06128.