No abstract available

[en] Published in summary form only

[en] We present results of self-consistent Hartree-Fock (HF) and continuum random-phase-approximation (RPA) calculations for proton emission following the electro-excitation of ⁵⁸Ni in the energy range ω=25-42 MeV. The calculations are performed for four different values of the momentum transfer ranging between 0.4 and 0.8 fm^-1. For the above kinematics, an extensive amount of data is available. We confront the data with the theoretical results obtained within the plane-wave impulse approximation (PWIA), HF and RPA. The role of the final-state interaction (FSI) is investigated. Furthermore, we investigate in how far the angular distributions may reflect the occurrence of giant resonances. A quasi-free knockout (QFK) reaction picture is found unable ot account for details of the data. Although the RPA offers a reasonable description of the overall q and ω behaviour of the angular distributions, it does not provide a good description of the proton-decay branch of the quadrupole and octupole resonance. (orig.)

[en] Precise relative spectroscopic factors for 3s proton removal have been measured with the (d,³He) reactions on ²⁰⁶Pb and ²⁰⁸Pb at 52 MeV. We find (i) configuration mixing in ²⁰⁵Tl as an explanation for the reported ''quenching'' of the 3s single particle density in the charge difference between ²⁰⁶Pb and ²⁰⁵Tl and (ii) comparable 3s proton occupation numbers in ²⁰⁶Pb and ²⁰⁸Pb. (orig.)

[en] Published in summary form only

No abstract available

[en] The inelastic response of ⁵⁸Ni to 183 MeV electrons from MAMI A at Mainz has been investigated up to excitation energies of 41 MeV for four momentum transfers between 0.4 and 0.8 fm^-1, and of ²⁸Si for two momentum transfers up to E_x=39 MeV. We have detected fast protons with energies up to 33 MeV using plastic scintillator telescopes. The angular correlations for the prominent kinematical bands show strong forward-backward asymmetry with shapes typical of the populated state in the residual nucleus. A comparison to RPA calculations is in progress. (orig.)

No abstract available

No abstract available

[en] Published in summary form only