Phys.Rev. C 103, 044317 (2021)

J.Isaak, D.Savran, B.Loher, T.Beck, U.Friman-Gayer, Krishichayan, N.Pietralla, V.Yu.Ponomarev, M.Scheck, W.Tornow, V.Werner, A.Zilges, M.Zweidinger

Dipole response in ^{128, 130}Te below the neutron threshold

NUCLEAR REACTIONS ^128,130Te(γ, γ'), (polarized γ, γ'), E=6.0, 9.13 MeV for ¹²⁸Te and 6.4, 8.5 MeV for ¹³⁰Te from Darmstadt high-intensity photon beams (DHIPS), and 2.76-8.92 MeV for ¹²⁸Te and 5.5-8.5 MeV for ¹³⁰Te linearly polarized and quasimonochromatic photon beams from TUNL HIγS facility; measured Eγ, Iγ, γγ(θ), γ(linear polarization). ^128,130Te; deduced levels below the neutron threshold, pygmy dipole resonance (PDR), J, π, γ-branching ratios to the first excited 2+ states, Γ₀²/Γ, photoabsorption cross sections, B(E1), dominant 1- states. Comparison with predictions of quasiparticle phonon model. Detailed data for levels given in the Supplemental Material of the paper.

doi: 10.1103/PhysRevC.103.044317