Symmetries, weak symmetries and related solutions of the Grad-Shafranov equation

Details Symmetries, weak symmetries and related solutions of the Grad-Shafranov equation Symmetries, weak symmetries and related solutions of the Grad-Shafranov equation

2010-12-07

arxiv.org/abs/1012.1460v1

Physics

Mathematical Physics

8 pages, 4 figures

Scientific paper

We discuss a new family of solutions of the Grad--Shafranov (GS) equation that describe D-shaped toroidal plasma equilibria with sharp gradients at the plasma edge. These solutions have been derived by exploiting the continuous Lie symmetry properties of the GS equation and in particular a special type of "weak" symmetries. In addition, we review the continuous Lie symmetry properties of the GS equation and present a short but exhaustive survey of the possible choices for the arbitrary flux functions that yield GS equations admitting some continuous Lie symmetry. Particular solutions related to these symmetries are also discussed.

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