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Inverse mean free path of swift electrons in metals irradiated by a strong laser field

Published online by Cambridge University Press:  22 July 2003

JUAN CARLOS MORENO-MARÍN
Affiliation:
Departament de Física, Enginyeria de Sistemes i Teoria del Senyal, Universitat d'Alacant, Alacant, Spain
ISABEL ABRIL
Affiliation:
Departament de Física Aplicada, Universitat d'Alacant, Alacant, Spain
RAFAEL GARCIA-MOLINA
Affiliation:
Departamento de Física, Universidad de Murcia, Murcia, Spain
NÉSTOR R. ARISTA
Affiliation:
División Colisiones Atómicas, Instituto Balseiro and Centro Atómico Bariloche, Bariloche, Argentina

Abstract

We analyze the influence of a high-intensity laser field in the inverse mean free path of electrons moving through a degenerate electron gas. Our calculations are based on the random-phase-approximation formalism, in terms of the dielectric function of the medium, where the effects of the laser field are included in the dynamical response. The main effects on the slowing down of the electrons are studied as a function of the intensity and frequency of the laser field, as well as a function of the projectile velocity. A modification of the electron inverse mean free path for plasmon and electron-hole excitations is obtained due to multiphoton-exchange processes.

Type
Research Article
Copyright
2003 Cambridge University Press

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