  Cross-sections for ${}^{nat}Pb(p,xn){}^{201-207}Bi$,
${}^{204}Pb(p,1-4n){}^{201-204}Bi$ and ${}^{206}Pb(p,3n){}^{204}Bi$ reactions
have been determined in the astrophysical energy range $20-30 \, MeV$. The
analysis were performed by $\gamma$-spectroscopy associated with half-lives
measurements. The results were compared with previously experimental data, when
available, and with theoretical calculations performed using TALYS code. We
report a possible new $\gamma$ transition from ${}^{204m}{Pb}$ and other
theoretical discrepancies, probably due overestimation of the Coulomb barrier
and neutron binding energy. Also reported are new determinations of the
energies and intensities of the $\gamma$'s emitted in the decays of
${}^{205,206}Bi$. We discuss possible implications for the r/rp-processes in
neutrino-driven wind in supernovae and neutron stars mergers.
