Nonlinear dynamics of nonadiabatic chirping-frequency Alfven modes in tokamak plasmas

被引：6
作者：
Wang, X. [1 ]
Briguglio, S. [2 ]
Bottino, A. [1 ]
Falessi, M. [2 ]
Hayward-Schneider, T. [1 ]
Lauber, Ph [1 ]
Mishchenko, A. [1 ]
Villard, L. [3 ]
Zonca, F. [2 ,4 ]
机构：
[1] Max Planck Inst Plasma Phys, D-85748 Garching, Germany
[2] ENEA, Fus & Nucl Safety Dept, Via Enrico Fermi 45 CP 65, I-00044 Frascati, Italy
[3] Swiss Plasma Ctr SPC, Ecole Polytech Fed Lausanne EPFL, CH-1015 Lausanne, Switzerland
[4] Zhejiang Univ, Inst Fus Theory & Simulat, Sch Phys, Hangzhou, Peoples R China
来源：
PLASMA PHYSICS AND CONTROLLED FUSION | 2023年 / 65卷 / 07期
关键词：
energetic particles; gyrokinetic; Alfven mode; ENERGETIC INJECTED BEAM; DRIVEN; SATURATION; EXCITATION; EVOLUTION; WAVES; DESTABILIZATION; SIMULATION; PARTICLES; TRANSPORT;
D O I：
10.1088/1361-6587/acd71f
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
Frequency chirping of Alfven modes, a phenomenon observed in tokamak fusion plasmas driven by energetic particles (EPs), can result in significant losses of EPs. In this study, we use the global gyrokinetic code ORB5 (Lanti et al 2020 Comput. Phys. Commun. 251 107072) to investigate the nonlinear dynamics of non-adiabatic frequency chirping EP modes (EPMs). Our results illuminate non-perturbative features of EPMs caused by the presence of EPs. Additionally, we find that, with a fixed safety factor profile and a single toroidal mode number, the frequency chirping rate is linearly proportional to the mode saturation amplitude, as predicted by the theory (Chen and Zonca 2016 Rev. Mod. Phys. 88 015008).
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页数：15
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共 79 条
  • [1] Nonlinear response of driven systems in weak turbulence theory
    Berk, HL
    Breizman, BN
    Fitzpatrick, J
    Pekker, MS
    Wong, HV
    Wong, KL
    [J]. PHYSICS OF PLASMAS, 1996, 3 (05) : 1827 - 1838
  • [2] Spontaneous hole-clump pair creation in weakly unstable plasmas
    Berk, HL
    Breizman, BN
    Petviashvili, NV
    [J]. PHYSICS LETTERS A, 1997, 234 (03) : 213 - 218
  • [3] Spontaneous hole-clump pair creation
    Berk, HL
    Breizman, BN
    Candy, J
    Pekker, M
    Petviashvili, NV
    [J]. PHYSICS OF PLASMAS, 1999, 6 (08) : 3102 - 3113
  • [4] PHASE SPACE HYDRODYNAMICS OF EQUIVALENT NONLINEAR SYSTEMS - EXPERIMENTAL AND COMPUTATIONAL OBSERVATIONS
    BERK, HL
    NIELSEN, CE
    ROBERTS, KV
    [J]. PHYSICS OF FLUIDS, 1970, 13 (04) : 980 - &
  • [5] SATURATION OF A SINGLE-MODE DRIVEN BY AN ENERGETIC INJECTED BEAM .1. PLASMA-WAVE PROBLEM
    BERK, HL
    BREIZMAN, BN
    [J]. PHYSICS OF FLUIDS B-PLASMA PHYSICS, 1990, 2 (09): : 2226 - 2234
  • [6] SATURATION OF A SINGLE-MODE DRIVEN BY AN ENERGETIC INJECTED BEAM .2. ELECTROSTATIC UNIVERSAL DESTABILIZATION MECHANISM
    BERK, HL
    BREIZMAN, BN
    [J]. PHYSICS OF FLUIDS B-PLASMA PHYSICS, 1990, 2 (09): : 2235 - 2245
  • [7] SATURATION OF A SINGLE-MODE DRIVEN BY AN ENERGETIC INJECTED BEAM .3. ALFVEN-WAVE PROBLEM
    BERK, HL
    BREIZMAN, BN
    [J]. PHYSICS OF FLUIDS B-PLASMA PHYSICS, 1990, 2 (09): : 2246 - 2252
  • [8] SCENARIOS FOR THE NONLINEAR EVOLUTION OF ALPHA-PARTICLE-INDUCED ALFVEN-WAVE INSTABILITY
    BERK, HL
    BREIZMAN, BN
    YE, HC
    [J]. PHYSICAL REVIEW LETTERS, 1992, 68 (24) : 3563 - 3566
  • [9] EXACT NONLINEAR PLASMA OSCILLATIONS
    BERNSTEIN, IB
    GREENE, JM
    KRUSKAL, MD
    [J]. PHYSICAL REVIEW, 1957, 108 (03): : 546 - 550
  • [10] Linear gyrokinetic particle-in-cell simulations of Alfven instabilities in tokamaks
    Biancalani, A.
    Bottino, A.
    Briguglio, S.
    Konies, A.
    Lauber, Ph.
    Mishchenko, A.
    Poli, E.
    Scott, B. D.
    Zonca, F.
    [J]. PHYSICS OF PLASMAS, 2016, 23 (01)
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