Probing the E2 properties of the scissors mode with real photons

The E2/M1 multipole mixing ratio δ1→2 of the 1+ sc → 2+ 1 γ -ray transition of 156 Gd and 164 Dy has been measured using the linearly polarized photon beams of the HIγ S facility. The employed method of photonscattering experiments in combination with polarized, quasi-monochromatic beams and a dedicated detector setup is highly sensitive to the electric quadrupole-decay properties of the scissors mode.

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