ar X iv : n uc l - th / 0 30 30 72 v 1 2 8 M ar 2 00 3 Cross sections for the excitation of isovector charge - exchange resonances in 208 Tl

ar X iv : n uc l - th / 0 30 30 44 v 1 1 8 M ar 2 00 3 Photoproduction of η ′ - mesons from the Proton

The presently available data for the reaction γp→η ′ p are analyzed in terms of a model in which the dominant production mechanism is the exchange of the vector mesons ω and ρ. To describe the data at photon energies close to the production threshold we introduce a resonance contribution due to the well established S 11 (1535) resonance. Finally we study the contributions due to nucleon exchang...

ar X iv : n uc l - th / 0 70 30 71 v 1 22 M ar 2 00 7 Dynamical symmetry of isobaric analog 0 + states in medium mass nuclei

An algebraic sp(4) shell model is introduced to achieve a deeper understanding and interpretation of the properties of pairing-governed 0 states in medium mass atomic nuclei. The theory, which embodies the simplicity of a dynamical symmetry approach to nuclear structure, is shown to reproduce the excitation spectra and fine structure effects driven by proton-neutron interactions and isovector p...

ar X iv : n uc l - th / 0 51 00 35 v 1 1 1 O ct 2 00 5 Effects of In - Medium NN Cross Sections on Particle Production

The in-medium modification of nucleon-nucleon (NN) cross sections is investigated by means of particle production in heavy ion collisions (HIC) at intermediate energies. In particular, the density dependence of the inelastic cross sections considerably affects the pion and kaon yields and their rapidity distributions. However, the (π/π)and (K/K)-ratios depend only moderately on the in-medium be...

ar X iv : n uc l - ex / 0 50 30 21 v 1 2 9 M ar 2 00 5 Evaporation residues produced in spallation of 208 Pb by protons at 500 A MeV

The production cross sections of fragmentation-evaporation residues in the reaction Pb+p at 500A MeV have been measured using the inverse-kinematics method and the FRS spectrometer (GSI). Fragments were identified in nuclear charge using ionisation chambers. The mass identification was performed event-by-event using the Bρ − TOF − ∆E technique. Although partially-unresolved ionic charge states ...

ar X iv : n uc l - th / 0 30 40 52 v 1 1 6 A pr 2 00 3