PSU Mark
Eberly College of Science Mathematics Department

Meeting Details

For more information about this meeting, contact Sergei Tabachnikov.

Title:Averaging, passages through resonances, and captures into resonance in dynamics of charged particles
Seminar:Department of Mathematics Colloquium
Speaker:Anatoly Nieshtadt, Loughborough University, UK
Abstract:
A study of motion of charged particles in the electromagnetic field of a wave propagating in plasma in the presence of a constant background magnetic field is a classical problem in plasma physics. Under different relations between parameters of this problem completely different dynamical phenomena take place. The averaging method is a natural tool for study of this problem. 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. In this case particle motion is described by a slow-fast Hamiltonian system. Capture into resonance may lead to unlimited particle acceleration along the front of the wave (so called surfatron acceleration).

Room Reservation Information

Room Number:MB114
Date:09 / 23 / 2010
Time:04:00pm - 05:00pm