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[en] The K-shell ionisation induced by 7-15 MeV proton bombardment on thin targets of Ag, Gd, Yb, Ta, Au, Pb and Th has been measured. The data are corrected for the contributions of the 'nuclear satellites' produced by internal conversion in the residual nuclei from (p, xn) reactions. The plane-wave Born approximation (PWBA) explains the data only up to Yb. For heavier elements, only the binary-encounter approximation (BEA) and the semiclassical approximation (SCA) including relativistic effects are in overall agreement with the experiment. A comparison with the existing alpha-particle ionisation cross sections at equal velocities shows the presence of increased electron binding due to the finite projectile charge. The experimental data reveal that this binding effect is influenced by the relativistic contraction of the electron wavefunction. After application of the binding correction, the relativistic SCA calculations reproduce the data best. (author)

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[en] Excitation functions of the elastic proton scattering by ⁶⁴Ni were measured in the energy range Ep=5.0-6.2 MeV at 90⁰, 125⁰ and 141⁰ and in the energy intervals 5.00-5.25 MeV and 5.85-6.20 MeV at 110⁰ and 160⁰. At 90⁰ the excitation function of the inelastic proton scattering leading to the 2⁺(1.34 MeV) state in ⁶⁴Ni was measured too. Out of the ten resonances found in the whole energy range, the resonances at 5.105, 5.985, 6.042 and 5.35 MeV were studied in more detail. The analysis of the elastic scattering provided the energy, orbital momentum, total and partial widths of the first three resonances. The inelastic scattering cross section for the last three resonances was sufficient to permit the spin determination by (p,p'γ) angular correlations in the Goldfarb-Seyler geometry. The spectroscopic factors Ssup(pp) are in good agreement with those obtained from (d,p) experiments. The resonance at 5.35 MeV exhibits an important 2p x 2₁⁺ amplitude in its wave function. Its inelastic partial widths and the corresponding spectroscopic factors Ssub(pp) were determined. The nonresonant background in the elastic channel is well described by shape and compound elastic scattering calculations with Perey's optical model parameters. (orig.)

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[en] The level scheme of the neutron deficient isotope ¹¹¹Sb up to about 3.7 MeV is established from in-beam gamma-ray spectroscopy experiments. The identification of the reaction channel using cross bombardments: ⁹⁵Mo+¹⁹F (56-68 MeV), ¹⁰⁶Cd+⁷Li (20-30 MeV), ¹⁰²Pd+¹¹B (45 MeV), charged partice-γ and neutron-γ coincidences is discussed. (orig.)

[en] The decay scheme of ⁵²Cr has been studied by γ-ray spectroscopy with the ⁵⁰Ti(α,2nγ) reaction. Spin and parity assignments were made on the basis of coincidence measurements, angular distributions, excitation functions and DSAM lifetime measurements. Six new high-energy levels with spins up to 9 were established. (Auth.)