The role of polarization current in magnetic island evolution

2001 ◽  
Vol 8 (6) ◽  
pp. 2835-2848 ◽  
Author(s):  
J. W. Connor ◽  
F. L. Waelbroeck ◽  
H. R. Wilson
Keyword(s):  
Polarization Current ◽  
Magnetic Island ◽  
Island Evolution

Collisionality dependence of the polarization current caused by a rotating magnetic island

2005 ◽  
Vol 12 (7) ◽  
pp. 072501 ◽  
Author(s):  
A. Bergmann ◽  
E. Poli ◽  
A. G. Peeters
Keyword(s):  
Polarization Current ◽  
Magnetic Island

Finite Larmor-Radius Theory of Magnetic Island Evolution

2001 ◽  
Vol 87 (21) ◽  
Author(s):  
F. L. Waelbroeck ◽  
J. W. Connor ◽  
H. R. Wilson
Keyword(s):  
Larmor Radius ◽  
Magnetic Island ◽  
Finite Larmor Radius ◽  
Island Evolution

The influence of the ion polarization current on magnetic island stability in a tokamak plasma

2006 ◽  
Vol 13 (12) ◽  
pp. 122507 ◽  
Author(s):  
R. Fitzpatrick ◽  
F. L. Waelbroeck ◽  
F. Militello
Keyword(s):  
Tokamak Plasma ◽  
Polarization Current ◽  
Magnetic Island

scholarly journals Neoclassical tearing mode control using electron cyclotron current drive and magnetic island evolution in JT-60U

2009 ◽  
Vol 49 (5) ◽  
pp. 055006 ◽  
Author(s):  
A. Isayama ◽  
G. Matsunaga ◽  
T. Kobayashi ◽  
S. Moriyama ◽  
N. Oyama ◽  
...  
Keyword(s):  
Electron Cyclotron ◽  
Current Drive ◽  
Tearing Mode ◽  
Magnetic Island ◽  
Mode Control ◽  
Island Evolution ◽  
Neoclassical Tearing Mode

The role of surface films in the kinetics of oxygen evolution at Pd + Au alloy electrodes

1962 ◽  
Vol 269 (1338) ◽  
pp. 419-440 ◽  
Keyword(s):  
Transition Region ◽  
Oxygen Evolution ◽  
Barrier Layer ◽  
Alkaline Solutions ◽  
Surface Films ◽  
Discharge Process ◽  
Polarization Current ◽  
Transient Effects ◽  
Kinetics Of

The kinetics of anodic oxygen evolution have been studied on Pd, Au and Pd + Au alloys in ultra-pure sulphuric acid and potassium hydroxide solutions and mechanisms of the processes involved are proposed. The role of barrier-layer films in determining the kinetic behaviour is demonstrated and supported by self-consistent interpretations of the Tafel slopes and the e.m.f. decay behaviour observed on open-circuit. Transient effects, characteristic of barrier-layer films, are observed when changes of the polarization current are made. At Au, and the gold-rich alloys in alkaline solution, a transition region in the currentpotential relation is observed which probably corresponds to a limiting high coverage of the electrochemically active surface with adsorbed reaction intermediates. The transition region corresponds to an onset of passive behaviour. In acid solutions, only the lower Tafel region is observed which has the same Tafel constants b and i 0 as those for the lower Tafel line in alkaline solutions indicating that the discharge process involves water rather than OH - ions, irrespective of pH. The relation of exchange currents to composition of the alloys is considered.

Impact of Frustrated Singularities on Magnetic Island Evolution

2003 ◽  
Vol 91 (12) ◽  
Author(s):  
B. D. Jemella ◽  
M. A. Shay ◽  
J. F. Drake ◽  
B. N. Rogers
Keyword(s):  
Magnetic Island ◽  
Island Evolution

scholarly journals Interplay between intrinsic plasma rotation and magnetic island evolution in disruptive discharges

2016 ◽  
Vol 42 (5) ◽  
pp. 465-471 ◽  
Author(s):  
G. Ronchi ◽  
J. H. F. Severo ◽  
F. Salzedas ◽  
R. M. O. Galvão ◽  
E. K. Sanada
Keyword(s):  
Magnetic Island ◽  
Plasma Rotation ◽  
Island Evolution

scholarly journals Magnetic island evolution in hot ion plasmas

2012 ◽  
Vol 19 (7) ◽  
pp. 072312 ◽  
Author(s):  
A. Ishizawa ◽  
F. L. Waelbroeck ◽  
R. Fitzpatrick ◽  
W. Horton ◽  
N. Nakajima
Keyword(s):  
Magnetic Island ◽  
Island Evolution
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