Nonequilibrium effects in electron-ion strongly coupled plasmas. Molecular dynamics simulation

Stochastic and dynamic properties of molecular dynamics systems: Simple liquids, plasma and electrolytes, polymers

“…The difference between the electron and ion kinetic energies follows an exponential decay law. The character of this long time relaxation agrees qualitatively with earlier results [34,36]. At the times less than 0.1τ e both the electron and the ion kinetic energies increase according to the quadratic fit.…”

“…The oscillatory character of non-Boltzmann relaxation vanishes when the nonideality parameter is less than γ = 0.5. The possibility of two stages of relaxation was noted in [36].…”

“…MDM can be a powerful tool for studying non-Boltzmann relaxation phenomena in more or less dense media. Some nonequilibrium processes have already been studied with MDM, for example, in [14,23,[34][35][36][37][38].…”

Standards for molecular dynamics modelling and simulation of relaxation

“…The superthermal excitation of plasma oscillations can be detected by comparing dynamical structure factors (DSF) of the plasma under consideration [8,10] for different k-vectors with the ones characterizing equilibrium case. The oscillations show up as enhanced and shifted peaks of the DSF.…”

“…The number of particle chosen is sufficient to study oscillations at plasma frequencies [11], and this choice does not influence very much the results of all simulations presented below. Interaction between electrons and ions is described by the pair Coulomb potential modified at small separations [8,11,39] to exclude for quantum bound states. Particles of the same type interact via the bare Coulomb potential.…”