Phys.Rev. C 86, 014303 (2012)

T.Ahn, G.Rainovski, N.Pietralla, L.Coquard, T.Moller, A.Costin, R.V.F.Janssens, C.J.Lister, M.P.Carpenter, S.Zhu

Identification of the 2_{1, ms} + mixed-symmetry state in ¹³⁶Ce

NUCLEAR REACTIONS ¹²C(¹³⁶Ce, ¹³⁶Ce'), E=475 MeV; measured Eγ, Iγ, γγ-coin using Gammasphere array at ANL facility. Coulomb excitation. ¹³⁶Ce; deduced levels, J, π, B(M1), B(E2), B(E1), B(E3), identification of one-quadrupole phonon mixed symmetry state (MSS). Systematics of energies of first 2+, and mixed-symmetry 2+ states, B(M1) in N=78 isotones. Discussed fragmentation of the one-phonon MSS of ¹³⁶Ce.

doi: 10.1103/PhysRevC.86.014303