Concept

Forme d'onde

Publications associées (86)

Power laws for the spatial dependence of electrical parameters in the high-voltage capacitive RF sheath

Following the analytical description of the collisionless high-voltage capacitive RF sheath in Lieberman (1988) and of the collisional high-voltage capacitive RF sheath in Lieberman (1989), electrical sheath parameters are calculated for a square-wave ie R ...

2000

Effect of triangular and elongated plasma shape on the sawtooth stability

Olivier Sauter, Timothy Goodman, Holger Reimerdes, Antoine Pochelon, Andrei Martynov

In the TCV tokamak the sawtooth period and the sawtooth amplitude are observed to depend strongly on the shape of the poloidal plasma cross section. Systematic scans of plasma elongation and triangularity show small sawteeth with short periods at high elon ...

2000

Energy confinement and MHD activity in shaped TCV plasmas with localized electron cyclotron heating

Olivier Sauter, Basil Duval, Stefano Coda, Timothy Goodman, Yves Martin, Jean-Marc Moret, Stefano Alberti, Ivo Furno, Minh Quang Tran, Patrick Blanchard, Holger Reimerdes, Jean-Philippe Hogge, René Chavan, Damien Fasel, Xavier Llobet, Henri Weisen, Jonathan Bryan Lister, Richard Pitts, Antoine Pochelon, Roland Behn, Francis Troyon, Philippe Marmillod, Gilbert Tonetti, Albert Perez, Blaise Marlétaz, Pierre-François Isoz, Jean-Claude Magnin, Andrei Martynov, Adriano Manini, Paolo Bosshard, Edgar Scavino

Confinement in TCV electron cyclotron heated discharges was studied as a function of plasma shape, i.e. as a function of elongation, 1.1 < kappa < 2.15, and triangularity, -0.65 less than or equal to delta less than or equal to 0.55. The electron energy co ...

1999

Fourier spectrum of curvilinear gratings of the second order

Isaac Amidror

The class of second-order curvilinear gratings consists of all the curvilinear gratings that are obtained by second-order spatial transformations of periodic gratings. It includes, for example, circular, elliptic, and hyperbolic gratings as well as circula ...

Opt. Soc. America1998

Electron-Cyclotron Resonance Heating on the Tca Tokamak

Timothy Goodman, Minh Quang Tran, Antoine Pochelon, Roland Behn

Electron cyclotron resonance heating (ECRH) experiments at 39 GHz with power levels similar to those of Ohmic heating have been conducted in the TCA tokamak, in either the X-mode or the O-mode. ECRH was observed to be more efficiently absorbed in low densi ...

1993

Computation of the periodic overvoltages due to ferroresonant phenomena in three-phase networks

Especially when a three-phase or single-phase circuit contains at least one capacitor and one saturable inductance, the waveform of the periodic voltages and currents in this circuit can reach several different values (depending on the initial conditions) ...

1974

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