Fig. 3. Temperature-dependent and density-dependent decay rates for ²⁰⁵Pb and ²⁰⁵Tl.

a, Our new weak decay rates across astrophysically relevant conditions. The ²⁰⁵Pb rate increases with thermal population of the 2.3-keV excited state, whereas the bound-state β⁻-decay channel opens as K-shell ionized states are populated (T > 50 MK). b, Our new rates compared with the original rates published in ref. ⁸, their interpolation as used in the FRUITY models⁴⁴ and the rates recommended in the NETGEN library⁴⁵, for n_e = 10²⁷ cm⁻³.