英国物理学会
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作者:P.H. Diamond , M. Leconte ...
来源:[J].Nuclear Fusion(IF 2.734), 2014, Vol.54 (4)IOP
摘要:This conference report summarizes the contributions to and discussions at the 3rd Asia–Pacific Transport Working Group (APTWG) meeting held in Jeju-island, Korea, on 21–24 May 2013. The main objective of the meeting is to develop a predictive understanding of transport mecha...
作者:P.H. Diamond , J.A. Boedo ...
来源:[J].Nuclear Fusion(IF 2.734), 2014, Vol.54 (7)IOP
摘要:We present direct evidence of low frequency, radially sheared, turbulence-driven flows (zonal flows (ZFs)) triggering edge transport barrier formation preceding the L- to H-mode transition via periodic turbulence suppression in limit-cycle oscillations (LCOs), consistent wit...
作者:P.H. Diamond , G.J. Choi ...
来源:[J].Nuclear Fusion(IF 2.734), 2014, Vol.54 (12)IOP
摘要:We present a new analytic expression for turbulent equipartition (TEP) pinch of toroidal angular momentum originating from magnetic field inhomogeneity of spherical torus (ST) plasmas. Starting from a conservative modern nonlinear gyrokinetic equation (Hahm et al 1988 Phys. ...
作者:P.H. Diamond , Y. Kosuga
来源:[J].Nuclear Fusion(IF 2.734), 2015, Vol.55 (4)IOP
摘要:We present a theory of turbulence elasticity, which follows from delayed response of drift waves (DWs) to zonal flow (ZF) shears. It is shown that when |〈 V 〉′ZF|/Δ ω k ⩾ 1, with |〈 V 〉′ZF| the ZF shearing rate and Δ ω ...
作者:P.H. Diamond , Y. Sun ...
来源:[J].Nuclear Fusion(IF 2.734), 2015, Vol.55 (7)IOP
摘要:The first comprehensive measurements of plasma flows and fluctuations nearby static magnetic islands driven by resonant magnetic perturbations are presented. These experiments were performed using multiple Langmuir probe arrays on the edge plasmas of the J-TEXT tokamak. Controlle...
作者:P.H. Diamond , A.E. Hubbard ...
来源:[J].Nuclear Fusion(IF 2.734), 2015, Vol.55 (8)IOP
摘要:Nonlinear transfer processes between large-scale edge flows and the ambient broadband fluctuations have been shown to play a significant role in the dynamics of edge turbulence, including spreading power from coherent modes and suppressing turbulence at the formation of edge tran...
作者:P.H. Diamond , K. Ida ...
来源:[J].Nuclear Fusion(IF 2.734), 2015, Vol.55 (8)IOP
摘要:The structure and evolution of the ion temperature ( ) and toroidal rotation () profile have been investigated in neutral beam injection (NBI)-heated KSTAR H-mode plasmas, both without and with resonant magnetic pertubations (RMPs). A clear disparity between the width of the...
作者:... J.M. Kwon , P.H. Diamond , T.S. Hahm
来源:[J].Nuclear Fusion(IF 2.734), 2015, Vol.55 (9)IOP
摘要:A new non-local mechanism of the global confinement degradation and ion temperature profile stiffness is proposed based on the results of global gyrokinetic simulations. We find that turbulence spreading into a marginally stable zone can increase turbulent transport to a level ex...
作者:... C. Chrystal , P.H. Diamond , G.R. McKee
来源:[J].Nuclear Fusion(IF 2.734), 2015, Vol.55 (11)IOP
摘要:In this paper we show that changing from an ion temperature gradient (ITG) to a trapped electron mode (TEM) dominant turbulence regime (based on linear gyrokinetic simulations) results experimentally in a strong density pump-out (defined as a reduction in line-averaged density) i...
作者:P.H. Diamond , F.M. Li ...
来源:[J].Nuclear Fusion(IF 2.734), 2016, Vol.56 (7)IOP
摘要:The acceleration of the co-current toroidal rotations around resonant surfaces by resonant magnetic perturbations (RMPs) through turbulence is presented. These experiments were performed using a Langmuir probe array in the edge plasmas of the J-TEXT tokamak. This study aims ...

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