Commun. Phys. 11, 3242 (2020)

P.-A.Soderstrom, L.Capponi, E.Aciksoz, T.Otsuka, N.Tsoneva, Y.Tsunoda, D.L.Balabanski, N.Pietralla, G.L.Guardo, D.Lattuada, H.Lenske, C.Matei, D.Nichita, A.Pappalardo, T.Petruse

Electromagnetic character of the competitive γγ/γ-decay from ^137mBa

RADIOACTIVITY ¹³⁷Cs(β^-), ¹³⁷Ba(IT); measured decay products, Eγ, Iγ, γ-γ-coin.; deduced γ-ray energies, widths and nuclear static dipole polarisabilities, angular correlation of the two photons emitted in the double-γ decay, Energy-sharing distribution for the two photons in the double-γ decay, an improved value on the double-photon versus single-photon branching ratio. Comparison with calculations. CeBr₃ detectors from ELIGANT, the ELI Gamma Above Neutron Threshold (ELIGANT) detector system.

doi: 10.1038/s41467-020-16787-4