Advances in physics of the magneto-hydro-dynamic and turbulence-based instabilities in toroidal plasmas via 2-D/3-D visualization

Park, Hyeon K.; Choi, M.; Kim, Minho; Kim, Minwoo; Lee, Jae-Hyun; Lee, Dongjae; Lee, Woochang; Yun, Gunsu

doi:10.1007/s41614-022-00076-2

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Volume 6 Publication1

Introduction1

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2023

2024

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Cited by 6 publications

(2 citation statements)

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“…Topical collection "Chandrasekhar Lecture (Chandra)" is lecture series of Chandrasekhar Prize laureates and one article is published in 2022 (Park et al 2022).…”

Section: Volume 6 Publicationmentioning

confidence: 99%

Editorial : Reviews of Modern Plasma Physics: Volume 6

Kikuchi

2023

Rev. Mod. Plasma Phys.

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“…Topical collection "Chandrasekhar Lecture (Chandra)" is lecture series of Chandrasekhar Prize laureates and one article is published in 2022 (Park et al 2022).…”

Section: Volume 6 Publicationmentioning

confidence: 99%

Editorial : Reviews of Modern Plasma Physics: Volume 6

Kikuchi

2023

Rev. Mod. Plasma Phys.

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“…In addition to these non-resonant wave-particle interactions between EPs and TMs/NTMs, resonance between them is found and studied by experiment and theory. The frequency chirping phenomena of TMs/NTMs on TFTR [21], ASDEX-U [22,23], EAST [24], DIII-D [25], KSTAR [26] and HL-2A [27] indicate strong wave-particle resonance between EPs and TMs/NTMs. Direct wave-particle interactions resulting in amplitude-bursting and frequency-chirping fishbone-like m/n = 2/1 (m and n are the poloidal and toroidal mode numbers) resonant TMs (r-TMs) have been found in the minimal safety factor q min ∼ 1.5 NBI plasmas on HL-2A [27].…”

Section: Introductionmentioning

confidence: 96%

Observation of resonant tearing mode induced by energetic-ion redistribution due to sawtooth collapse in HL-2A NBI plasmas

Yu,

Zhu,

Chen

et al. 2024

Nucl. Fusion

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Recent observations in HL-2A tokamak give new experimental evidence of resonant tearing modes (resonant-TMs) caused by the re-distribution of energetic ions (EIs) due to sawtooth collapses in NBI plasmas. The m/m=2/1 (m and n are the poloidal and toroidal mode numbers) resonant-TMs with frequencies chirping down rapidly are found after the strong busts of fishbones and closely followed sawtooth collapses. The frequencies of fishbones and resonant-TMs chirp down from 10 to 7 kHz and 5 to 2 kHz rapidly, which are higher and lower than the 4-6 kHz existing weak TMs near q=2 (q is the safety factor) rational surface. The fishbones and existing TMs propagate in ion and electron diamagnetic directions, respectively. In contrast, the resonant-TMs propagate in electron diamagnetic directions. This suggests that the counter-direction EIs, which generated by the redistribution of EIs due to sawtooh collapses, excite the resonant-TMs. The simulation results from M3D-K code show that the counter-passing EIs play an important role on the excitation of resonant-TMs. The results can help broadening and understanding the interaction mechanism between energetic particles and TMs.

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Reviews of Modern Plasma Physics: Volume 7

Kikuchi

2024

Rev. Mod. Plasma Phys.

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Advances in physics of the magneto-hydro-dynamic and turbulence-based instabilities in toroidal plasmas via 2-D/3-D visualization

Cited by 6 publications

References 185 publications

Editorial : Reviews of Modern Plasma Physics: Volume 6

Editorial : Reviews of Modern Plasma Physics: Volume 6

Observation of resonant tearing mode induced by energetic-ion redistribution due to sawtooth collapse in HL-2A NBI plasmas

Reviews of Modern Plasma Physics: Volume 7

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