PAC2013 - List of Authors (Lopes, S.R.)

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.

Paper

Title

Page

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.