Eur. Phys. J. D 41, 519-530 (2007)
https://doi.org/10.1140/epjd/e2006-00260-6

Channeling chaotic transport in a wave-particle experiment

Building barriers in phase space

¹ Équipe turbulence plasma, PIIM, CNRS/Université de Provence, Centre Saint-Jérôme, case 321, 13397 Marseille, France
² Centre de Physique Théorique, CNRS, Luminy, case 907, 13288 Marseille, France
³ Association Euratom-CEA, DRFC/DSM/CEA, CEA Cadarache, 13108 St. Paul-lez-Durance, France

Corresponding author: ^a macor@up.univ-mrs.fr

Received: 4 August 2006
Published online: 8 December 2006

Abstract

A numerical and experimental study of a control method aimed at channeling chaos by building barriers in phase space is performed on a paradigm for wave-particle interaction, i.e., a traveling wave tube. Control of chaotic diffusion is achieved by adding small apt modifications to the system with a low additional cost of energy. This modification is realized experimentally through additional waves with small amplitudes. Robustness of the method is investigated both numerically and experimentally.