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Hmode pedestal and LH transition studies on
, 2005
"... tract No. DEFC0299ER54512. Reproduction, translation, publication, use and disposal, in whole or in part, by or for the United States government is permitted. This page left intentionally blank. Hmode pedestal and LH transition studies on Alcator CMod ..."
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tract No. DEFC0299ER54512. Reproduction, translation, publication, use and disposal, in whole or in part, by or for the United States government is permitted. This page left intentionally blank. Hmode pedestal and LH transition studies on Alcator CMod
LH Transition Dynamics and Power Threshold Minimum
"... A physical model to explain the minimum in the power threshold of the L→H transition is suggested. Its crucial new elements, compared to the prototype due to (Miki & Diamond 2012), are the separately evolved electron and ion heat transfers and the independent power supply in each chanel. The pow ..."
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A physical model to explain the minimum in the power threshold of the L→H transition is suggested. Its crucial new elements, compared to the prototype due to (Miki & Diamond 2012), are the separately evolved electron and ion heat transfers and the independent power supply in each chanel
Bifurcation theory for the LH transition in magnetically confined fusion plasmas
, 2014
"... The mathematical field of bifurcation theory is extended to be applicable to 1dimensionally resolved systems of nonlinear partial differential equations, aimed at the determination of a certain specific bifurcation. This extension is needed to be able to properly analyze the bifurcations of the rad ..."
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of the radial transport in magnetically confined fusion plasmas. This is of special interest when describing the transition from the lowenergyconfinement state to the highenergyconfinement state of the radial transport in fusion plasmas (i.e. the LH transition), because the nonlinear dynamical behavior
A Theory of LeadTime in Probabilistic Excitation of L/H Transition
"... A quantity of a leadtime, /1*6, is newly introduced to examine the probabilistic occurrence of the L/ H transition. The leadtime is a time period during which a transition is likely to occur. We show that the leadtime has the statistical distribution as a function of the distance from critical pa ..."
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parameter, e.g. ln "n"e I when the density is a key pararneter for transition. It has the dependence like /r"u6 n ln " n "o 12 if the background noise distribution is given as P (n") n ln" n"nl2. Keywords: probabilistic nature, L/H transition, lead
Bifurcation theory for the LH transition in magnetically confined fusion plasmas Bifurcation theory for the LH transition in magnetically confined fusion plasmas
, 72309
"... The mathematical field of bifurcation theory is extended to be applicable to 1dimensionally resolved systems of nonlinear partial differential equations, aimed at the determination of a certain specific bifurcation. This extension is needed to be able to properly analyze the bifurcations of the ra ..."
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of the radial transport in magnetically confined fusion plasmas. This is of special interest when describing the transition from the lowenergyconfinement state to the highenergyconfinement state of the radial transport in fusion plasmas (i.e., the LH transition), because the nonlinear dynamical behavior
Singularity theory study of overdetermination in models for L–H transitions
 Preprint URL: http://xxx.lanl.gov/abs/mathph/9908023 or http://xxx.adelaide.edu.au/abs/mathph/9908023
, 1999
"... Two dynamical models that have been proposed for determining aspects of confined plasma behavior around L–H transitions are analysed using singularity theory and stability theory. The recognition problem for the unperturbed bifurcation sets is solved by applying singularity theory methods to determi ..."
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Cited by 2 (2 self)
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Two dynamical models that have been proposed for determining aspects of confined plasma behavior around L–H transitions are analysed using singularity theory and stability theory. The recognition problem for the unperturbed bifurcation sets is solved by applying singularity theory methods
WarmIon Drift Alfv'en Turbulence and the LH Transition
"... Introduction and Summary Recent years have seen the emergence of three dimensional computational models of turbulence and transport in tokamak plasmas near the plasma edge [14]. The edge region is important since not only is it a significant if not the dominant part of the plasma deciding the LH ..."
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Introduction and Summary Recent years have seen the emergence of three dimensional computational models of turbulence and transport in tokamak plasmas near the plasma edge [14]. The edge region is important since not only is it a significant if not the dominant part of the plasma deciding the LH
A Walk in the Parameter Space of LH Transitions without Stepping on or through the Cracks
, 2000
"... A mathematically and physically sound threedegreeoffreedom dynamical model that emulates low to highconfinement mode (LH) transitions is proposed on the basis of a singularity theory critique of earlier fragile models. It is found to contain two codimension 2 organizing centers and two Hopf bi ..."
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A mathematically and physically sound threedegreeoffreedom dynamical model that emulates low to highconfinement mode (LH) transitions is proposed on the basis of a singularity theory critique of earlier fragile models. It is found to contain two codimension 2 organizing centers and two Hopf
Effect of the ∇B drift direction on plasma edge properties and the
"... LH transition in DIIID ..."
Modeling of Electric Fields in Tokamak Edge Plasma and LH Transition
"... The radial electric field in the separatrix vicinity is simulated by means of the B2SOLPS5.0 2D fluid code [1], in which the most complete system of transport equations is solved including all the important perpendicular currents and × drifts. From the similar fluid codes [2][3] this one dif ..."
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The radial electric field in the separatrix vicinity is simulated by means of the B2SOLPS5.0 2D fluid code [1], in which the most complete system of transport equations is solved including all the important perpendicular currents and × drifts. From the similar fluid codes [2][3] this one differs by a more detailed account of parallel viscosity and
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