Author: Rizzato, F.B.
Paper Title Page
MOPAC01 Nonparaxial Transverse Effects on the Propagation of Nonlinear Electromagnetic Pulses 81
 
  • A. Bonatto, R. Pakter, F.B. Rizzato
    IF-UFRGS, Porto Alegre, Brazil
  • A. Bonatto, S.R. Lopes
    UFPR, Curitiba, Brazil
  • C. Bonatto
    UFPel, Pelotas, Brazil
  • R.P. Nunes
    UFRGS, Porto Alegre, Brazil
 
  Funding: CNPq, Brasil, AFOSR Grant FA9550-12-1-0438, USA.
In the present analysis we study the weakly nonlinear interaction between trains of electromagnetic pulses and space-charge fields in laser-plasma systems. We direct the analysis to regimes evolving with the co-moving coordinate of the beam frame, but do not make any assumptions on paraxial or underdense approximate conditions. The model thus constructed allows us to investigate regimes where transverse and longitudinal length scales of the pulses are comparable. Resonant and nonresonant regimes of space-charge wave excitation are analyzed. In both cases, with aid of analytical estimates and numerical simulations, we examine how far trains of electromagnetic pulses can travel before being affected by the destructive transverse effects.
 
 
TUPAC01 Kinetic Theory of Halo Formation in Charged Particle Beams 448
 
  • W. Simeoni, F.B. Rizzato
    IF-UFRGS, Porto Alegre, Brazil
 
  The proceeding proposes a derivation of the Vlasov-Poisson equation where the distribution function is splitted in a main part standing for the core and a fluctuating part standing for the halo, with which core-halo dynamics is analysed.