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Experimental Validation of a Kinetic Ballooning Mode in High-Performance High-Bootstrap Current Fraction Fusion Plasmas.
Jian, X; Chen, J; Ding, S; Garofalo, A; Gong, X; Holland, C; Huang, J; Chan, V S; Qin, X; Yu, G; Ma, R R; Du, X; Hong, R; Staebler, G; Wang, H; Yan, Z; Bass, E; Brower, D; Ding, W; Orlov, D.
Afiliación
  • Jian X; General Atomics, P.O. Box 85608, San Diego, California 92186-5608, USA.
  • Chen J; Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, Anhui 230031, China.
  • Ding S; University of California, San Diego, La Jolla, California 92093-0417, USA.
  • Garofalo A; University of California Los Angeles, Los Angeles, California 90095, USA.
  • Gong X; General Atomics, P.O. Box 85608, San Diego, California 92186-5608, USA.
  • Holland C; General Atomics, P.O. Box 85608, San Diego, California 92186-5608, USA.
  • Huang J; Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, Anhui 230031, China.
  • Chan VS; University of California, San Diego, La Jolla, California 92093-0417, USA.
  • Qin X; Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, Anhui 230031, China.
  • Yu G; General Atomics, P.O. Box 85608, San Diego, California 92186-5608, USA.
  • Ma RR; University of Wisconsin-Madison, Madison, Wisconsin 53706, USA.
  • Du X; University of California at Davis, Davis, California 95616, USA.
  • Hong R; Southwestern Institute of Physics, P.O. Box 432 Chengdu 610041, China.
  • Staebler G; General Atomics, P.O. Box 85608, San Diego, California 92186-5608, USA.
  • Wang H; University of California Los Angeles, Los Angeles, California 90095, USA.
  • Yan Z; General Atomics, P.O. Box 85608, San Diego, California 92186-5608, USA.
  • Bass E; General Atomics, P.O. Box 85608, San Diego, California 92186-5608, USA.
  • Brower D; University of Wisconsin-Madison, Madison, Wisconsin 53706, USA.
  • Ding W; University of California, San Diego, La Jolla, California 92093-0417, USA.
  • Orlov D; University of California Los Angeles, Los Angeles, California 90095, USA.
Phys Rev Lett ; 131(14): 145101, 2023 Oct 06.
Article en En | MEDLINE | ID: mdl-37862644
ABSTRACT
We report the observation of a set of coherent high frequency electromagnetic fluctuations that leads to a turbulence induced self-regulating phenomenon in the DIII-D high bootstrap current fraction plasma. The fluctuations have frequency of 130-220 kHz, the poloidal wavelength and phase velocity are 16-30 m^{-1} and ∼30 km/s, respectively, in the outboard midplane with the estimated toroidal mode number n∼5-9. The fluctuations are located in the internal transport barrier (ITB) region at large radius and are experimentally validated to be kinetic ballooning modes (KBM). Quasilinear estimation predicts the KBM to be able to drive experimental particle flux and non-negligible thermal flux, suggesting its significant role in regulating the ITB saturation.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Phys Rev Lett Año: 2023 Tipo del documento: Article País de afiliación: Estados Unidos
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Phys Rev Lett Año: 2023 Tipo del documento: Article País de afiliación: Estados Unidos