Equilibrium Gradient Effects in the Theory of Alfven-Wave Heating

An explicit expression for the local power absorption density in a uniformly-magnetized slab plasma is derived from the Vlasov-Maxwell equations, taking into account density and temperature gradients. Using a transformation to Lagrangian coordinates, the kinetic flux of energy due to particle streaming can be separated in a suitable way from the actual power dissipation. Computations using this expression show how equilibrium gradients play a role in the modelling of low-frequency Alfven wave heating, and give a threshold below which the gradient effects are important in a medium-sized Tokamak.


Published in:
Plasma Physics and Controlled Fusion, 33, 5, 521-530
Year:
1991
ISSN:
0741-3335
Laboratories:
SPC
CRPP




 Record created 2008-04-16, last modified 2018-01-28


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