Nonlinear response of electrons to a positive ion

Abstract

Electric field dynamics at a positive ion imbedded in an electron gas is considered using a semiclassical description. The dependence of the field autocorrelation function on charge number is studied for strong ion-electron coupling via MD simulation. The qualitative features for larger charge numbers are a decreasing correlation time followed by an increasing anticorrelation. Stopping power and related transport coefficients determined by the time integral of this correlation function result from the competing effects of increasing initial correlations and decreasing dynamical correlations. An interpretation of the MD results is obtained from an effective single particle model showing good agreement with the simulation results.

arXiv commentTo be published in the proceedings of the International Workshop on Strongly Coupled Coulomb Systems, Journal of Physics A

References in corpus (1)

• Three-gluon vertex in arbitrary gauge and dimension

Cited by in corpus (5)

• Theoretical Description of Coulomb Balls - Fluid Phase
• Molecular dynamics simulation for modeling plasma spectroscopy
• Study of charge-charge coupling effects on dipole emitter relaxation within a classical electron-ion plasma description
• Kinetic Theory for Electron Dynamics Near a Positive Ion
• Linear Response for Confined Particles