201 citations · 572 across the 15 of their papers we have counts for
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Study of the interplay between magnetic shear and resonances using Hamiltonian models for the magnetic field lines
Marie-Christine Firpo, Dana Constantinescu
The issue of magnetic confinement in magnetic fusion devices is addressed within a purely magnetic approach. Using some Hamiltonian models for the magnetic field lines, the dual im…
Enhanced confinement with increased extent of the low magnetic shear region in tokamak plasma
Lorenzo Nasi, Marie-Christine Firpo
The Hamiltonian representation of magnetic field lines enables one to study their confinement properties in tokamaks through the use of symplectic maps such as the symmetric tokama…
Early out-of-equilibrium beam-plasma evolution
M. -C. Firpo, A. F. Lifschitz, E. Lefebvre +1
We solve analytically the out-of-equilibrium initial stage that follows the injection of a radially finite electron beam into a plasma at rest and test it against particle-in-cell…
Early nonlinear regime of MHD internal modes: the resistive case
M. -C. Firpo
It is shown that the critical layer analysis, involved in the linear theory of internal modes, can be extended continuously into the early nonlinear regime. For the m=1 resistive m…
Characterization of the initial filamentation of a relativistic electron beam passing through a plasma
A. Bret, M. -C. Firpo, C. Deutsch
The linear instability that induces a relativistic electron beam passing through a return plasma current to filament transversely is often related to some filamentation mode with w…
Dynamical analysis of the nonlinear growth of the m=n=1 resistive internal mode
Marie-Christine Firpo, Bruno Coppi
A dynamical analysis is presented that self-consistently takes into account the motion of the critical layer, in which the magnetic field reconnects, to describe how the m=n=1 resi…
Long-time discrete particle effects versus kinetic theory in the self-consistent single-wave model
M-C. Firpo, F. Doveil, Y. Elskens +3
The influence of the finite number N of particles coupled to a monochromatic wave in a collisionless plasma is investigated. For growth as well as damping of the wave, discrete par…
Trapping oscillations, discrete particle effects and kinetic theory of collisionless plasma
F. Doveil, M-C. Firpo, Y. Elskens +3
Effects induced by the finite number of particles on the evolution of a monochromatic electrostatic perturbation in a collisionless plasma are investigated. For growth as well…
Phase transition in the collisionless regime for wave-particle interaction
M. -C. Firpo, Y. Elskens
Gibbs statistical mechanics is derived for the Hamiltonian system coupling self-consistently a wave to N particles. This identifies Landau damping with a regime where a second orde…
Kinetic limit of N-body description of wave-particle self- consistent interaction
M. C. Firpo, Y. Elskens
A system of N particles eN=(x1,v1,...,xN,vN) interacting self-consistently with M waves Zn=An*exp(iTn) is considered. Hamiltonian dynamics transports initial data (eN(0),Zn(0)) to…