The decay pattern of the Pygmy Dipole Resonance of 140 Ce

Published

Journal Article

© 2016 The Authors. The decay properties of the Pygmy Dipole Resonance (PDR) have been investigated in the semi-magic N=82 nucleus 140Ce using a novel combination of nuclear resonance fluorescence and γ-γ coincidence techniques. Branching ratios for transitions to low-lying excited states are determined in a direct and model-independent way both for individual excited states and for excitation energy intervals. Comparison of the experimental results to microscopic calculations in the quasi-particle phonon model exhibits an excellent agreement, supporting the observation that the Pygmy Dipole Resonance couples to the ground state as well as to low-lying excited states. A 10% mixing of the PDR and the [21+×PDR] is extracted.

Full Text

Duke Authors

Cited Authors

  • Löher, B; Savran, D; Aumann, T; Beller, J; Bhike, M; Cooper, N; Derya, V; Duchêne, M; Endres, J; Hennig, A; Humby, P; Isaak, J; Kelley, JH; Knörzer, M; Pietralla, N; Ponomarev, VY; Romig, C; Scheck, M; Scheit, H; Silva, J; Tonchev, AP; Tornow, W; Wamers, F; Weller, H; Werner, V; Zilges, A

Published Date

  • May 10, 2016

Published In

Volume / Issue

  • 756 /

Start / End Page

  • 72 - 76

International Standard Serial Number (ISSN)

  • 0370-2693

Digital Object Identifier (DOI)

  • 10.1016/j.physletb.2016.02.042

Citation Source

  • Scopus