英国物理学会
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作者:A.V. Melnikov , G.E. Notkin ...
来源:[J].Nuclear Fusion(IF 2.734), 2011, Vol.51 (8), pp.083024 (9pp)IOP
摘要:Analysis of a wide range of experimental results in plasma magnetic confinement investigations shows that in most cases, plasmas are self-organized. In the tokamak case, it is realized in the self-consistent pressure profile, which permits the tokamak plasma to be macroscopically...
作者:A.V. Melnikov , M.P. Gryaznevich ...
来源:[J].Nuclear Fusion(IF 2.734), 2012, Vol.52 (6), pp.063004 (8pp)IOP
摘要:Long-distance correlations (LDCs) of plasma potential fluctuations in the plasma edge have been investigated in the TCABR tokamak in the regime of edge biasing H-mode using an array of multi-pin Langmuir probes. This activity was carried out as part of the scientific program...
作者:A.V. Melnikov , A. Cappa ...
来源:[J].Nuclear Fusion(IF 2.734), 2013, Vol.53 (7)IOP
摘要:Alfvén eigenmode (AE) activity driven by NBI-produced fast ions is observed in TJ-II plasmas. A two-step response of the measured AEs to electron cyclotron heating (ECH) power is seen. In a first step, the continuous character of the unstable AEs changes to a chirping charac...
作者:A.V. Melnikov , L.G. Eliseev ...
来源:[J].Nuclear Fusion(IF 2.734), 2015, Vol.55 (6)IOP
摘要:This article provides new insight into previous and new experimental data regarding behaviour of small-scale density fluctuations in T-10 ohmic and electron cyclotron resonance heated (ECRH) discharges. The experiments demonstrate the existence of certain peaked–‘margin...
作者:A.V. Melnikov , S.V. Neudatchin ...
来源:[J].Nuclear Fusion(IF 2.734), 2017, Vol.57 (10)IOP
摘要:Transition to an all-metal wall was realized on T-10 by replacement of graphite limiters with tungsten ones. Light impurity levels remained high and W accumulation in the plasma core was revealed. A movable lithium (Li) limiter was added to investigate the possibility of the...
作者:A.V. Melnikov , J. Stockel ...
来源:[J].Nuclear Fusion(IF 2.734), 2017, Vol.57 (12)IOP
摘要:Axisymmetric geodesic acoustic mode (GAM) oscillations of the magnetic field, plasma potential and electron temperature have been identified on the COMPASS tokamak. This work brings an overview of their electromagnetic properties studied by multi-pin reciprocating probes and...
作者:A.V. Melnikov , C. Hidalgo ...
来源:[J].Nuclear Fusion(IF 2.734), 2011, Vol.51 (8), pp.083043 (10pp)IOP
摘要:A direct comparison of the electric potential and its fluctuations in the T-10 tokamak and the TJ-II stellarator is presented for similar plasma conditions in the two machines, using the heavy ion beam probe diagnostic. We observed the following similarities: (i) plasma pote...
作者:A.V. Melnikov , L.G. Eliseev ...
来源:[J].Nuclear Fusion(IF 2.734), 2013, Vol.53 (9)IOP
摘要:New experimental observations of the plasma potential using the heavy ion beam probe diagnostic are presented together with a theoretical description of the formation of the electric field E r in the T-10 circular tokamak ( B 0 = 1.5–2.5 T, R = 1.5 m,...
作者:A.V. Melnikov , L.G. Eliseev ...
来源:[J].Nuclear Fusion(IF 2.734), 2013, Vol.53 (9)IOP
摘要:Plasma potential and turbulent particle flux Γ E × B in the plasma core were measured for the first time during L–H/H–L transitions in the TJ-II heliac using a heavy ion beam probe. The L–H transition is characterized by a simultaneous potential drop ∼...

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