of the sequence-specific DR.

High-Temperature Suppression for Li-like 
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We begin by considering DR of Li-like , for which the density dependent total DR rate coefficient, and therefore the suppression factor, has been computed rigorously within a collisional-radiative modeling approach [@badnell].

In the electron collisional ionization case, because of the consequential high temperature of peak abundance, dielectronic recombination occurs mainly through energetically high-lying autoionizing states (via dipole core-excitations) for which radiative stabilization is by the core electron into final states just below the ionization limit: $$\begin{aligned}
e^- + 1s^22s  \rightarrow &
             1s^22pnl  \rightarrow &  1s^22snl + h\nu\ .
              \label{eq1}\end{aligned}$$ In the zero-density limit, the intermediate $1s^22snl$ states can only decay further via radiative cascading until the $1s^22s^2$ final recombined ground state is reached, thereby completing the DR process: $$\begin{aligned}
1s^22snl \longrightarrow & 1s^22sn^\prime l^\prime+ h\nu_1  \rightarrow ... \rightarrow & 1s^22s^2 + h\nu_1+h\nu_2+... \label{eqradstab}\end{aligned}$$ For finite electron densities $n_{\rm{e}}$, on the other hand, there is also the possibility for reionization via electron impact, either directly or stepwise, $$\begin{aligned}
e^-  + 1s^22snl  \longrightarrow  & 1s^2 2sn^\prime l^\prime+ e^-  \rightarrow ... \rightarrow & 1s^22s + e^- + e^- \ ,\label{eqreion}\end{aligned}$$ and the probability of the latter pathway is proportional to the electron density 