Controlling chaos in Wave-Particle interactions

• Grant number: 13/01335-6
• Support Opportunities: Scholarships abroad - Research Internship - Doctorate (Direct)
• Effective date (Start): March 01, 2014
• Effective date (End): February 28, 2015
• Field of knowledge: Physical Sciences and Mathematics - Physics - Classical Areas of Phenomenology and Applications
• Principal Investigator: Iberê Luiz Caldas
• Grantee: Meirielen Caetano de Sousa
• Supervisor: Fabrice Doveil
• Host Institution: Instituto de Física (IF). Universidade de São Paulo (USP). São Paulo , SP, Brazil
• Research place: Physique des Interactions Ioniques et Moléculaires (PIIM), France
• Associated to the scholarship: 11/20794-6 - Chaos in magnetized relativistic systems: regular acceleration and control of chaos, BP.DD

Abstract

In this project, we will investigate wave-particle interaction using the traveling wave tube (TWT) of the PIIM laboratory of Aix-Marseille University. In the TWT, an electron beam is confined by an axial magnetic field and it moves under the action of electrostatic waves. The characteristics of the device allow us to control the parameters of the electron beam and of the electrostatic waves, which makes the TWT an ideal device to study wave-particle interaction. From the experiments performed in the TWT, we will be able to analyze several characteristics of wave-particle interaction, especially the chaotic dynamics of the electrons of the beam and the control of chaos. A system similar to the TWT has been studied on a theoretical basis in the research project related to this request. As part of the contribution between São Paulo and Aix-Marseille Universities, we will check experimentally the validity of our theoretical results obtained for particle beams moving under the combined action of magnetic fields and electrostatic waves. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

DE SOUSA, M. C.; DOVEIL, F.; ELSKENS, Y.; CALDAS, I. L.; IEEE. An Upgraded 4 Meters Long Traveling Wave Tube for Plasma Physics Research. IVEC 2021: 2021 22ND INTERNATIONAL VACUUM ELECTRONICS CONFERENCE, v. N/A, p. 2-pg., 2021-01-01. (18/03211-6, 11/20794-6, 13/01335-6, 15/05186-0)

DE SOUSA, M. C.; DOVEIL, F.; ELSKENS, Y.; CALDAS, I. L.. Wave-particle interactions in a long traveling wave tube with upgraded helix. Physics of Plasmas, v. 27, n. 9, SEP 2020. (15/05186-0, 13/01335-6, 11/20794-6, 18/03211-6)