Proc.6th Intern.Workshop Nuclear Fission and Spectroscopy of Neutron-Rich Nuclei, Chamrousse, France, March 20-24, 2017, p.05007 (2018); EPJ Web of Conf. 193 (2018)

N.Cieplicka-Orynczak, S.Leoni, B.Fornal, D.Bazzacco, A.Blanc, G.Benzoni, S.Bottoni, A.Bracco, F.C.L.Crespi, G.de France, L.W.Iskra, M.Jentschel, U.Koster, C.Michelagnoli, P.Mutti, N.Pietralla, G.Simpson, T.Soldner, C.Ur, W.Urban, V.Werner

The γ-ray spectroscopy studies of low-spin structures in ²¹⁰Bi and ²⁰⁶Tl using cold neutron capture reactions

NUCLEAR REACTIONS ²⁰⁹Bi(n, γ), E=thermal;²⁰⁵Tl(n, γ), E=thermal; measured Eγ, Iγ, γγ-coin using EXILL HPGe array for ²⁰⁹Bi reaction and also triple γγ∓coin and γγ-coin angular correlations using FIPPS for ²⁰⁵Tl; deduced ²¹⁰Bi low spin levels, J, π; ²¹⁰Bi; calculated low spin levels, J, π using shell model; deduced some ²¹⁰Bi levels cannot be described by valence proton and neutron couplings, but may arise from coupling of valence particles to 3^- octupole phonon of doubly-magic ²⁰⁸Pb core. Results for ²⁰⁶Tl currently in progress and preliminary.

doi: 10.1051/epjconf/201819305007