Internal measurement of magnetic turbulence in ELMy H-mode tokamak plasmas

Autor:	Max Curie, Weixing Ding, Mike Kotschenreuther, Jie Chen, D. L. Brower, Swadesh M Mahajan, E. J. Strait, David Hatch, Xiang Jian, M. R. Halfmoon, Zheng Yan, Tamsin Osborne
Rok vydání:	2020
Předmět:	Physics Tokamak Turbulence Polarimetry Mode (statistics) Plasma confinement Plasma Condensed Matter Physics 01 natural sciences 010305 fluids & plasmas law.invention Pedestal Amplitude law 0103 physical sciences Atomic physics 010306 general physics
Zdroj:	Physics of Plasmas. 27:120701
ISSN:	1089-7674 1070-664X
Popis:	Magnetic turbulence is directly observed internally in the pedestal of ELMy H-mode tokamak plasmas using a newly developed Faraday-effect polarimetry measurement. Fluctuation amplitude is δ b r ≥ 15 G (150–500 kHz), with a ratio of magnetic to density fluctuation | δ b r / B | / | δ n / n | ≥ 0.15. Magnetic turbulence is identified as resulting from micro-tearing-instability and mode growth accompanied by degraded plasma confinement is observed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::110b6fc19eb404048327ddcf362697cf https://doi.org/10.1063/5.0029996 Zobrazit plný text záznamu