Seminari

Averaging, passages through resonances, and captures into resonances in dynamics of charged particles

Name: Averaging, passages through resonances, and captures into resonances in dynamics of charged particles
Start: 2014-04-07T11:00:00+02:00
End: 2014-04-07T12:00:00+02:00
Location: Dipartimento di Fisica e Astronomia

by Prof. Anatoly Neishtadt (Loughborough University - UK)

Monday 7 Apr 2014, 11:00 → 12:00 Europe/Rome

Aula Teorici (Dipartimento di Fisica e Astronomia)

Aula Teorici

Dipartimento di Fisica e Astronomia

Via Irnerio, 46

Description

A study of motion of charged particles in the field of an electromagnetic or electrostatic wave propagating in plasma in the presence of a uniform stationary background magnetic field is a classical problem in plasma physics. Under different relations between parameters of this problem completely different dynamical phenomena take place. In this talk I am planning to describe phenomena of capture into resonance and scattering on resonance that occur in the case of slow high frequency waves and a weak background magnetic field. Capture into resonance may lead to unlimited particle acceleration along the front of the wave (so called surfatron acceleration).