Decay pattern of the Pygmy Dipole Resonance in¹⁴⁰Ce

Abstract

Abstract. The decay behavior of low-lying dipole states in 140 Ce was investigated exploiting the γ 3 -setup at the HIγS facility using quasi-monochromatic photon beams. Branching ratios of individual excited states as well as average branching ratios to low-lying states have been extracted using γ − γ coincidence measurements. The comparison of the average branching ratios to QPM calculations shows a remarkable agreement between experiment and theory in the energy range from 5.0 to 8.5 MeV.