@article{395a3ab692e74e898da32d8866e9fa4c,
title = "Synchronization of Geodesic Acoustic Modes and Magnetic Fluctuations in Toroidal Plasmas",
abstract = "The synchronization of geodesic acoustic modes (GAMs) and magnetic fluctuations is identified in the edge plasmas of the HL-2A tokamak. Mesoscale electric fluctuations (MSEFs) having components of a dominant GAM, and m/n=6/2 potential fluctuations are found at the same frequency as that of the magnetic fluctuations of m/n=6/2 (m and n are poloidal and toroidal mode numbers, respectively). The temporal evolutions of the MSEFs and the magnetic fluctuations clearly show the frequency entrainment and the phase lock between the GAM and the m/n=6/2 magnetic fluctuations. The results indicate that GAMs and magnetic fluctuations can transfer energy through nonlinear synchronization. Such nonlinear synchronization may also contribute to low-frequency zonal flow formation, reduction of turbulence level, and thus confinement regime transitions.",
author = "Zhao, {K. J.} and Y. Nagashima and Diamond, {P. H.} and Dong, {J. Q.} and K. Itoh and Itoh, {S. I.} and Yan, {L. W.} and J. Cheng and A. Fujisawa and S. Inagaki and Y. Kosuga and M. Sasaki and Wang, {Z. X.} and L. Wei and Huang, {Z. H.} and Yu, {D. L.} and Hong, {W. Y.} and Q. Li and Ji, {X. Q.} and Song, {X. M.} and Y. Huang and Yi Liu and Yang, {Q. W.} and Ding, {X. T.} and Duan, {X. R.}",
note = "Funding Information: This work is supported by the National Magnetic Confinement Fusion Science Program No.{\^A} 2014GB108004, No.{\^A} 2013GB107001, No.{\^A} 2014GB107000, and No.{\^A} 2013GB112008; by the fund of State Key Laboratory of Advanced Electromagnetic Engineering and Technology in HUST (2016KF008); by the National Science Foundation of China, No.{\^A} 11175060, No.{\^A} 11375054, No.{\^A} 91130031, and No.{\^A} 11320101005; by Grant-in-Aid for Scientific Research of JSPS (15H02155, 15H02335, and 16H02442); by the Department of Energy under Award No. DE-FG02-04ER54738 and by the WCI Program of the National Research Foundation of Korea funded by the Ministry of Education, Science and Technology of Korea [WCI 2009-001]. Publisher Copyright: {\textcopyright} 2016 American Physical Society.",
year = "2016",
month = sep,
day = "28",
doi = "10.1103/PhysRevLett.117.145002",
language = "English",
volume = "117",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "14",
}