We analyze nonlinear aspects of the self-consistent wave–particle interaction using Hamiltonian dynamics in the single wave model, where the wave is modified due to the particle dynamics. This interaction plays an important role in the emergence of plasma instabilities and turbulence. The simplest case, where one particle is coupled with one wave , is completely integrable, and the nonlinear effects reduce to the wave potential pulsating while the particle either remains trapped or circulates forever. On increasing the number of particles (, ), integrability is lost and chaos develops. Our analyses identify the two standard ways for chaos to appear and grow (the homoclinic tangle born from a separatrix, and the resonance overlap near an elliptic fixed point). Moreover, a strong form of chaos occurs when the energy is high enough for the wave amplitude to vanish occasionally.
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August 2021
Research Article|
August 02 2021
Low-dimensional chaos in the single wave model for self-consistent wave–particle Hamiltonian
J. V. Gomes
;
J. V. Gomes
a)
1
Departamento de Física, Universidade Federal do Paraná
, 81531-980 Curitiba, PR, Brazil
2
Aix-Marseille Université
, CNRS, PIIM UMR 7345, 13397 Marseille, France
a)Author to whom correspondence should be addressed: [email protected]
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M. C. de Sousa
;
M. C. de Sousa
b)
2
Aix-Marseille Université
, CNRS, PIIM UMR 7345, 13397 Marseille, France
3
Universidade de Sao Paulo, Instituto de Fisica
, 05508-090 São Paulo, SP, Brazil
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R. L. Viana
;
R. L. Viana
c)
1
Departamento de Física, Universidade Federal do Paraná
, 81531-980 Curitiba, PR, Brazil
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I. L. Caldas
;
I. L. Caldas
d)
3
Universidade de Sao Paulo, Instituto de Fisica
, 05508-090 São Paulo, SP, Brazil
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Y. Elskens
Y. Elskens
e)
2
Aix-Marseille Université
, CNRS, PIIM UMR 7345, 13397 Marseille, France
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J. V. Gomes
1,2,a)
M. C. de Sousa
2,3,b)
R. L. Viana
1,c)
I. L. Caldas
3,d)
Y. Elskens
2,e)
1
Departamento de Física, Universidade Federal do Paraná
, 81531-980 Curitiba, PR, Brazil
2
Aix-Marseille Université
, CNRS, PIIM UMR 7345, 13397 Marseille, France
3
Universidade de Sao Paulo, Instituto de Fisica
, 05508-090 São Paulo, SP, Brazil
a)Author to whom correspondence should be addressed: [email protected]
b)
Electronic mail: [email protected]
c)
Electronic mail: [email protected]
d)
Electronic mail: [email protected]
e)
Electronic mail: [email protected]
Chaos 31, 083104 (2021)
Article history
Received:
December 17 2020
Accepted:
July 14 2021
Citation
J. V. Gomes, M. C. de Sousa, R. L. Viana, I. L. Caldas, Y. Elskens; Low-dimensional chaos in the single wave model for self-consistent wave–particle Hamiltonian. Chaos 1 August 2021; 31 (8): 083104. https://doi.org/10.1063/5.0040939
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