Spin-vibrational 1+ states in 140Ce
Guliyev, E. · Yavas, O. · Kuliev, A. A.
Original · EN
The properties of collective IΠ=1+ states in double even semimagic nucleus 140Ce are investigated in random phase approximation(RPA). The calculation of the B(M1) strength, elastic gamma-scattering cross section σ(gamma)(ω) and gamma-decay width Σ(gamma)(ωᵢ) show that in 140Ce the isovector spin-spin interactions concenrate the main strength of M1 transition at energy 7.89 MeV where the isovector spin-flip magnetic resonance may appear. The predisctions are consistent with the observed M1 strength in 140Ce which is seen to be concentrated within a range of about 0.8 MeV centered at an excitation of 7.95 MeV.
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