"Energetic particle modes: example of autoresonance and superradiance in fusion plasmas"
Event details
| Date | 13.01.2015 |
| Hour | 14:30 › 15:30 |
| Speaker | Prof. Fulvio Zonca, ENEA C.R. Frascati, I |
| Location |
PPB 019
|
| Category | Conferences - Seminars |
Energetic Particle Modes (EPM) are resonant non-normal modes born out of the shear Alfvén wave (SAW) continuous spectrum when the energetic particle (EP) drive overcomes SAW continuum damping in nonuniform fusion plasmas. Their nonlinear evolution is characterized by radially convective amplification of the EPM wave-packet and secular EP radial transports. Here, we demonstrate that EPM-EP phase locking is an example of Autoresonance in fusion plasmas; and that the corresponding EPM-EP nonlinear dynamics has interesting analogies with Superradiance. These complex nonlinear behaviors are described, in a simple yet practically relevant limiting case, by a complex Nonlinear Schrödinger Equation.
Practical information
- Informed public
- Free
Organizer
- Prof. P. Ricci
Contact
- Prof. P. Ricci