Phys.Rev. C 97, 035803 (2018)

M.Weigand, T.Heftrich, Ch.E.Dullmann, K.Eberhardt, S.Fiebiger, J.Glorius, K.Gobel, R.Haas, C.Langer, S.Lohse, R.Reifarth, D.Renisch, C.Wolf

66.7-keV γ-line intensity of ¹⁷¹Tm determined via neutron activation

RADIOACTIVITY ¹⁷¹Er(β^-)[from ¹⁷⁰Er(n, γ), E=thermal]; ¹⁷¹Tm(β^-)[from ¹⁷¹Er β^- decay]; measured Eγ, Iγ, E(x rays), I(x rays), precise intensity of the 66.7-keV γ ray from the decay of ¹⁷¹Tm; deduced number of ¹⁷¹Er and ¹⁷¹Tm atoms produced in reactor irradiation. Relevance to ¹⁷¹Tm neutron capture cross section, and s process in thermally pulsing asymptotic giant branch stars.

doi: 10.1103/PhysRevC.97.035803