Phys. Rev. C 78, 044309 (2008) [5 pages]Parity assignments in 140Ce up to 7 MeV using Compton polarimetryReceived 21 July 2008; published 14 October 2008 Parity quantum numbers of J=1 states up to 7 MeV in the region of the Pygmy Dipole Resonance in 140Ce were determined model independently by combining the methods of Nuclear Resonance Fluorescence and Compton polarimetry. For the first time the well-established method of Compton polarimetry was applied at such high energies. The experiment was performed using a fourfold segmented HPGe clover detector for the detection of the scattered photons. For all investigated dipole transitions asymmetries are found which correspond to negative parity of the excited states. © 2008 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevC.78.044309
DOI:
10.1103/PhysRevC.78.044309
PACS:
21.10.-k, 24.70.+s, 25.20.Dc, 27.60.+j
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