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A cellular automaton model of laser–plasma interactions

Published online by Cambridge University Press:  14 May 2002

DIMITRI BATANI ,
SABRINA BIAVA ,
SERGIO BITTANTI  and
FABIO PREVIDI
DIMITRI BATANI
Affiliation:
Dipartimento di Fisica “G. Occhialini,” Università di Milano-Bicocca, INFM, Unità di Milano-Bicocca, Piazza della Scienza 3, 20126 Milano, Italy
SABRINA BIAVA
Affiliation:
Dipartimento di Ingegneria, Universita' di Bergamo, Via Marconi 5, 24044 Dalmine (Bg), Italy
SERGIO BITTANTI
Affiliation:
Dipartimento di Ingegneria, Universita' di Bergamo, Via Marconi 5, 24044 Dalmine (Bg), Italy
FABIO PREVIDI
Affiliation:
Dipartimento di Ingegneria, Universita' di Bergamo, Via Marconi 5, 24044 Dalmine (Bg), Italy
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Abstract

This paper deals with the realization of a CA model of the physical interactions occurring when high-power laser pulses are focused on plasma targets. The low-level and microscopic physical laws of interactions among the plasma and the photons in the pulse are described. In particular, electron–electron interaction via the Coulomb force and photon–electron interaction due to ponderomotive forces are considered. Moreover, the dependence on time and space of the index of refraction is taken into account, as a consequence of electron motion in the plasma. Ions are considered as a fixed background. Simulations of these interactions are provided in different conditions and the macroscopic dynamics of the system, in agreement with the experimental behavior, are evidenced.

Keywords

Cellular automataLaser-plasma interactionPhysical-based modeling
Type
Research Article
Information
Laser and Particle Beams , Volume 19 , Issue 4 , October 2001 , pp. 631 - 642
Copyright
© 2001 Cambridge University Press

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