The phenomenon of the acceleration of the (perturbing) electrons by the ion field (AEIF) significantly reduces Stark widths and shifts in plasmas of relatively high densities and/or relatively low temperature. Our previous analytical calculations of the AEIF were based on the

The phenomenon of the acceleration of the (perturbing) electrons by the ion field (AEIF) significantly reduces Stark widths and shifts in plasmas of relatively high densities and/or relatively low temperature. This phenomenon was first described analytically in the binary approach in paper [

Due to the presence of the ion field, perturbing electrons are passing by the radiator at higher velocities than it would be at the absence of the ion field. The increase of the electron velocities translates into a decrease of the electron broadening (i.e., a decrease of Stark widths and shifts). The narrowing (and shift-reducing) phenomenon caused by the AEIF is the realization of a

The analytically described direct and indirect couplings of the electron and ion microfields combined with the analytical description of the ion dynamics constituted a highly advanced theory of the Stark broadening [

However, there are two different schools of thought on what should be the ultimate test of various theories. One school of thought considers the comparison with benchmark experiments as the ultimate test of the theory. For spectral line shapes in plasmas, benchmark experiments are those, where plasma parameters are determined independently of the spectral line shape theory to be tested.

Another school of thought insists that the ultimate test of a particular theory is the comparison with results of a code based on fully-numerical simulations starting from the “scratch” rather than from some analytical advance. Within this school of thought, there have been recently conducted fully numerical simulations trying to “mimic” the phenomenon of AEIF [

It should be emphasized that those simulations [

In the current paper we resolve this issue as follows. Our previous analytical calculations of the AEIF [

Thus two totally different analytical approaches (dynamical and statistical) agree with each other (by predicting a decrease of the electron Stark broadening) and therefore disprove the fully-numerical simulations from [

Romanovsky and Ebeling [

Let us first consider the most practically important case where

At the stage preceding the averaging over velocities, the electron impact broadening operator in the dipole approximation has the following form (in accordance to the conventional theory [

From (

For completeness, let us now consider the opposite case:

To better visualize our results, we define in a natural way the electron broadening reducing factor

The electron broadening reducing factor

We performed analytical calculations of the phenomenon of AEIF based on the new statistical multiparticle approach originating from Romanovsky-Ebeling’s paper [

The failure of the fully-numerical simulations from [

Complicated codes are a collection of individual blocks or components. Even if the individual blocks are relatively accurate, the entire code may be not. In another publication [

There are numerous failures of complicated large-scale codes/simulations (see, e.g., [

So, the failure of the fully-numerical simulations from [

The last but not least: other codes (developed by Alexiou, who is one of the coauthors of [