Measurement of the γ Decay from the Energy Region of the Pygmy Dipole States Excited in the ²⁰⁸Pb(p,p′γ) Reaction at CCB

For a few years, the medical cyclotron Proteus C-235 at the Cyclotron Centre Bronowice in Kraków, Poland has been regularly used for nuclear structure experiments. One of the ongoing studies is focused on the γ decay of collective states populated in (p,p′γ) reactions. In a recent experiment, γ decays of excited states in the energy region of the Pygmy Dipole States in ²⁰⁸Pb have been observed. Good efficiency and energy resolution provided by the PARIS clusters and LaBr₃:Ce scintillators facilitate a comparison of the obtained energy spectra with previous measurements of pygmy states in this nucleus.