EPJ Web of Conferences (Jan 2015)

Decay pattern of the Pygmy Dipole Resonance in 140Ce

  • Isaak J.,
  • Löher B.,
  • Savran D.,
  • Aumann T.,
  • Beller J.,
  • Cooper N.,
  • Derya V.,
  • Duchêne M.,
  • Endres J.,
  • Fiori E.,
  • Kelley J.H.,
  • Knörzer M.,
  • Pietralla N.,
  • Ponomarev V.Yu.,
  • Romig C.,
  • Scheck M.,
  • Scheit H.,
  • Silva J.,
  • Tonchev A.P.,
  • Tornow W.,
  • Weller H.R.,
  • Werner V.,
  • Zilges A.,
  • Zweidinger M.

DOI
https://doi.org/10.1051/epjconf/20159301048
Journal volume & issue
Vol. 93
p. 01048

Abstract

Read online

The decay behavior of low-lying dipole states in 140Ce was investigated exploiting the γ3-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.