Fig. 4: Origin of the lifetime variation.

a Partial linewidths of each of the core-hole types for the decay channel showing the largest partial linewidth variation. For this channel, the two valence holes of the decay product are located in the same MO shown in the inset. b Calculated core-hole lifetime of the cation for the three types of core-hole orbitals at various internuclear distances. Conversion between linewidth and lifetime is obtain using \(\tau = \hbar /\Gamma\), where Γ is the linewidth, and τ the lifetime. The equilibrium distance (2.32 Å) is shown by the dotted line. c Contribution of the local and non-local decay chanels at the equilibrium internuclear distance.