Nonlinear dynamics of phase space zonal structures and energetic particle physics in fusion plasmas
A general theoretical framework for investigating the nonlinear dynamics of phase space zonal structures is presented in this work. It is then, more specifically, applied to the limit where the nonlinear evolution time scale is smaller or comparable to the wave–particle trapping period. In this limi...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2015-01-01
|
| Series: | New Journal of Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1367-2630/17/1/013052 |
| _version_ | 1827873991180681216 |
|---|---|
| author | F Zonca L Chen S Briguglio G Fogaccia G Vlad X Wang |
| author_facet | F Zonca L Chen S Briguglio G Fogaccia G Vlad X Wang |
| author_sort | F Zonca |
| collection | DOAJ |
| description | A general theoretical framework for investigating the nonlinear dynamics of phase space zonal structures is presented in this work. It is then, more specifically, applied to the limit where the nonlinear evolution time scale is smaller or comparable to the wave–particle trapping period. In this limit, both theoretical and numerical simulation studies show that nonadiabatic frequency chirping and phase locking could lead to secular resonant particle transport on meso- or macro-scales. The interplay between mode structures and resonant particles then provides the crucial ingredient to properly understand and analyze the nonlinear dynamics of Alfvén wave instabilities excited by nonperturbative energetic particles in burning fusion plasmas. Analogies with autoresonance in nonlinear dynamics and with superradiance in free-electron lasers are also briefly discussed. |
| first_indexed | 2024-03-12T16:45:52Z |
| format | Article |
| id | doaj.art-c2aaf97aebd64b1a878265a64255ee7d |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:45:52Z |
| publishDate | 2015-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-c2aaf97aebd64b1a878265a64255ee7d2023-08-08T14:16:20ZengIOP PublishingNew Journal of Physics1367-26302015-01-0117101305210.1088/1367-2630/17/1/013052Nonlinear dynamics of phase space zonal structures and energetic particle physics in fusion plasmasF Zonca0L Chen1S Briguglio2G Fogaccia3G Vlad4X Wang5ENEA C. R. Frascati , CP 65-00044 Frascati, Italy; Institute for Fusion Theory and Simulation and Department of Physics , Zhejiang University, Hangzhou, 310027 Peopleʼs Republic of ChinaInstitute for Fusion Theory and Simulation and Department of Physics , Zhejiang University, Hangzhou, 310027 Peopleʼs Republic of China; Department of Physics and Astronomy, University of California , Irvine CA 92697-4575, USAENEA C. R. Frascati , CP 65-00044 Frascati, ItalyENEA C. R. Frascati , CP 65-00044 Frascati, ItalyENEA C. R. Frascati , CP 65-00044 Frascati, ItalyMax-Planck-Institut für Plasmaphysik , Boltzmannstr. 2, Garching D-85748, GermanyA general theoretical framework for investigating the nonlinear dynamics of phase space zonal structures is presented in this work. It is then, more specifically, applied to the limit where the nonlinear evolution time scale is smaller or comparable to the wave–particle trapping period. In this limit, both theoretical and numerical simulation studies show that nonadiabatic frequency chirping and phase locking could lead to secular resonant particle transport on meso- or macro-scales. The interplay between mode structures and resonant particles then provides the crucial ingredient to properly understand and analyze the nonlinear dynamics of Alfvén wave instabilities excited by nonperturbative energetic particles in burning fusion plasmas. Analogies with autoresonance in nonlinear dynamics and with superradiance in free-electron lasers are also briefly discussed.https://doi.org/10.1088/1367-2630/17/1/013052Alfvèn wavesNonlinear phenomenafast particle effectssolitonsBGK modes52.35.Bj |
| spellingShingle | F Zonca L Chen S Briguglio G Fogaccia G Vlad X Wang Nonlinear dynamics of phase space zonal structures and energetic particle physics in fusion plasmas New Journal of Physics Alfvèn waves Nonlinear phenomena fast particle effects solitons BGK modes 52.35.Bj |
| title | Nonlinear dynamics of phase space zonal structures and energetic particle physics in fusion plasmas |
| title_full | Nonlinear dynamics of phase space zonal structures and energetic particle physics in fusion plasmas |
| title_fullStr | Nonlinear dynamics of phase space zonal structures and energetic particle physics in fusion plasmas |
| title_full_unstemmed | Nonlinear dynamics of phase space zonal structures and energetic particle physics in fusion plasmas |
| title_short | Nonlinear dynamics of phase space zonal structures and energetic particle physics in fusion plasmas |
| title_sort | nonlinear dynamics of phase space zonal structures and energetic particle physics in fusion plasmas |
| topic | Alfvèn waves Nonlinear phenomena fast particle effects solitons BGK modes 52.35.Bj |
| url | https://doi.org/10.1088/1367-2630/17/1/013052 |
| work_keys_str_mv | AT fzonca nonlineardynamicsofphasespacezonalstructuresandenergeticparticlephysicsinfusionplasmas AT lchen nonlineardynamicsofphasespacezonalstructuresandenergeticparticlephysicsinfusionplasmas AT sbriguglio nonlineardynamicsofphasespacezonalstructuresandenergeticparticlephysicsinfusionplasmas AT gfogaccia nonlineardynamicsofphasespacezonalstructuresandenergeticparticlephysicsinfusionplasmas AT gvlad nonlineardynamicsofphasespacezonalstructuresandenergeticparticlephysicsinfusionplasmas AT xwang nonlineardynamicsofphasespacezonalstructuresandenergeticparticlephysicsinfusionplasmas |