  The in-medium properties of the D13(1520) nucleon resonance were studied via
photoproduction of pi0-mesons from nuclei (C, Ca, Nb, Pb) with the
TAPS-detector at the Mainz MAMI accelerator. The inclusive (single and multiple
pion production) data disagree with model predictions which explain the
disappearance of the second resonance bump in total photoabsorption via a
medium modification of the D13 --> N rho decay. The exclusive single pi0
production data show no broadening of the resonance structure beyond Fermi
smearing. Although due to final state interaction effects pion production tests
the nucleus at densities less than the average nuclear density, both results
together cast doubt on attempts to explain the vanishing of the second
resonance bump for heavy nuclei by a broadening of the D13-resonance in nuclear
matter.
