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SUMMARY:"Energetic particle modes: example of autoresonance and superradia
 nce in fusion plasmas"
DTSTART:20150113T143000
DTEND:20150113T153000
DTSTAMP:20261005T021957Z
UID:0b8619e25052fe2fa80838436d44d5a382969fc1b4587e871171c886
CATEGORIES:Conferences - Seminars
DESCRIPTION:Prof. Fulvio Zonca\, ENEA C.R. Frascati\, I\nEnergetic Particl
 e Modes (EPM) are resonant non-normal modes born out of the shear Alfvén 
 wave (SAW) continuous spectrum when the energetic particle (EP) drive over
 comes 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\; an
 d that the corresponding EPM-EP nonlinear dynamics has interesting analogi
 es with Superradiance. These complex nonlinear behaviors are described\, i
 n a simple yet practically relevant limiting case\, by a complex Nonlinear
  Schrödinger Equation.
LOCATION:PPB 019
STATUS:CONFIRMED
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