Phys.Rev. C 106, 044321 (2022)

V.Karayonchev, A.Blazhev, J.Jolie, A.Dewald, A.Esmaylzadeh, C.Fransen, G.Hafner, L.Knafla, C.Muller-Gatermann, G.Rainovski, J.-M.Regis, K.Schomacker, P.Van Isacker

New aspects of the low-energy structure of ²¹¹At

NUCLEAR REACTIONS ²⁰⁹Bi(¹⁶O, ¹⁴C)²¹¹At, E=84 MeV; measured recoiling beam-like nuclei, Eγ, Iγ, (particle)γ-coin. ²¹¹At; deduced levels, J, π, high-spin states, T_1/2 of the excited states, B(E2). Recoil-distance Doppler shift and the Doppler-shift attenuation methods. Comparison to two shell-model calculations, one using the Kuo-Herling residual interaction and the other using a single-j approximation for protons in the 0h_9/2 orbital. Comparison to other experimental data. Cologne plunger device with 11 HPGe detectors positioned in two rings at FN-Tandem accelerator (University of Cologne).

doi: 10.1103/PhysRevC.106.044321