MERCREDI 1 AVRIL 2009
14 heures
Salle Séminaire 5
Centre de Physique Théorique
Marseille-Luminy

Alain Brizard
St-Michael College, Colchester, Vermont, USA

Title: Ray phase-space methods in linear mode conversion

Abstract: A three-wave Budden model with two resonance layers is constructed that
allows recirculation of energy fluxes along a quadrangle in ray phase space.
The transmission, reflection, and conversion coefficients for this extended
Budden problem are calculated by ray phase-space methods and the
modular-eikonal approach. Analytical and numerical results show that all
coefficients exhibit interference effects that depend on an interference phase
calculated from the coupling constants and the area enclosed by the quadrangle.