ETD

Archivio digitale delle tesi discusse presso l'Università di Pisa

Tesi etd-11232011-111059


Tipo di tesi
Tesi di dottorato di ricerca
Autore
TAMBURINI, MATTEO
URN
etd-11232011-111059
Titolo
Radiation reaction effects in superintense laser-plasma interaction
Settore scientifico disciplinare
FIS/03
Corso di studi
FISICA
Relatori
tutor Prof. Macchi, Andrea
relatore Prof. Pegoraro, Francesco
Parole chiave
  • radiation reaction
  • radiation pressure acceleration
  • radiation friction
  • polarization effects
  • laser-matter interactions
Data inizio appello
25/11/2011
Consultabilità
Completa
Riassunto
At the extremely high laser intensities expected in next generation experiments, electrons can
become ultrarelativistic within a fraction of wave period experiencing superstrong accelerations therefore emitting large amounts of electromagnetic radiation. The Radiation Reaction (RR) force basically describes the back action on a single electron by its self-generated electromagnetic fields and it may significantly affect the dynamics at the extreme intensities expected in the foreseen laser-plasma interaction regimes.

In the present thesis, we present the results of our multi-dimensional Particle-In-Cell (PIC) simulations at ultra-high intensities showing the RR ability to reduce the electron heating and to increase both the electron and the ion bunching. Our approach is based on the Landau-Lifshitz equation of motion for electrons which is free from known problems of other approaches such as, e.g., runaway solutions. A detailed study of polarization effects at ultra-high intensities is also presented.
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