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Charge-charge coupling effects on dipole emitter relaxation within a classical electron-ion plasma description

Emmanuelle Dufour, Annette Calisti, and Bernard Talin

Marco A. Gigosos and Manuel A. González

Teresa del Río Gaztelurrutia

James W. Dufty

  • UMR6633, Université de Provence, Centre Saint Jérôme, 13397 Marseille Cedex 20, France

  • Departamento de Óptica y Física Aplicada, Facultad de Ciencias, Universidad de Valladolid, 47071 Valladolid, Spain

  • Escuela Superior de Ingenieros, Ald. Urquijo s/n 48013 Bilbao, Spain

  • Department of Physics, University of Florida, Gainesville, Florida 32611, USA

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Phys. Rev. E 71, 066409 – Published 24 June, 2005

DOI: https://doi.org/10.1103/PhysRevE.71.066409

Abstract

Studies of charge-charge (ion-ion, ion-electron, and electron-electron) coupling properties for ion impurities in an electron gas are carried out on the basis of a regularized electron-ion potential without short-range Coulomb divergence. This work is motivated, in part, by questions arising from recent spectroscopic measurements revealing discrepancies with present-day theoretical descriptions. Many of the current radiative property models for plasmas include only single electron-emitter collisions and neglect some or all charge-charge interactions. A molecular-dynamics simulation of dipole relaxation is proposed here to allow proper account of many electron-emitter interactions and all charge-charge couplings. As illustrations, molecular-dynamics simulations are reported for the cases of a single ion embedded in an electron plasma and for a two-component ion-electron plasma. Charge-charge coupling effects are discussed for hydrogenlike Balmer α lines at weak coupling conditions.

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Phys. Rev. E 71, 066409– Published 24 June, 2005
  • Received 11 August 2004

© 2005 American Physical Society

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