Author: Joseph Allan SnipesPublisher:
ISBN:
Category : Plasma oscillations
Languages : en
Pages : 234
Book Description
The dynamics of sawtooth phenomena in the Texas experimental Tokamak
Author: Joseph Allan SnipesPublisher:
ISBN:
Category : Plasma oscillations
Languages : en
Pages : 234
Book Description
Energy Research Abstracts
Author: American Doctoral Dissertations
Author: Publisher:
ISBN:
Category : Dissertation abstracts
Languages : en
Pages : 784
Book Description
An experimental investigation of the dynamics of pellet ablation on the Texas experimental tokamak
Author: Roger David DurstPublisher:
ISBN:
Category : Tokamaks
Languages : en
Pages : 284
Book Description
Physics Briefs
Author: Finite Pressure Effects on the Tokamak Sawtooth Crash
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 141
Book Description
The sawtooth crash is a hazardous, disruptive phenomenon that is observed in tokamaks whenever the safety factor at the magnetic axis is below unity. Recently, Tokamak Test Fusion Reactor (TFTR) experimental data has revealed interesting features of the dynamical pressure evolution during the crash phase. Motivated by the experimental results, this dissertation focuses on theoretical modeling of the finite pressure effects on the nonlinear stage of the sawtooth crash. The crash phase has been studied numerically employed a toroidal magnetohydrodynamic (MHD) initial value code deduced from the FAR code. For the first time, by starting from a concentric equilibrium, it has been shown that the evolution through an m/n = 1/1 magnetic island induces secondary high-n ballooning instabilities. The magnetic island evolution gives rise to convection of the pressure inside the inversion radius and builds up a steep pressure gradient across the island separatrix, or current sheet, and thereby triggers ballooning instabilities below the threshold for the axisymmetric equilibrium. Due to the onset of secondary ballooning modes, concomitant fine scale vortices and magnetic stochasticity are generated. These effects produce strong flows across the current sheet, and thereby significant modify the m = 1 driven magnetic reconnection process. The resultant interaction of the high-n ballooning modes with the magnetic reconnection process is discussed.
Dissertation Abstracts International
Author: Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 854
Book Description
Resonant external magnetic perturbations on the Texas experimental tokamak
Author: William Arthur CravenPublisher:
ISBN:
Category : Tokamaks
Languages : en
Pages : 312
Book Description
An investigation of impurity flow velocity in the Texas experimental tokamak
Author: Andrew Gaddy MeigsPublisher:
ISBN:
Category : Tokamaks
Languages : en
Pages : 550
Book Description
Author: