%0 Journal Article %1 rodrigues.2005 %A Rodrigues, Paulo %A Bizarro, João P. S. %D 2005 %I American Physical Society %J Phys. Rev. Lett. %K JET current_hole current_reversal equilibrium i-mhd s_theory tokamak %N 1 %P 015001 %R 10.1103/PhysRevLett.95.015001 %T Grad-Shafranov Equilibria with Negative Core Toroidal Current in Tokamak Plasmas %U http://prl.aps.org/abstract/PRL/v95/i1/e015001 %V 95 %X Numerical Grad-Shafranov (GS) equilibria with negative current density in the plasma core are computed which do not impose any particularly chosen models for the pressure and current-density profiles. This flexibility allows the profiles to be tailored so that an island unfolds in the low-field side, even for elongated plasmas, thus sustaining the negative-current core against outward forces. Among other topological results, reversed GS equilibria are also shown to be necessarily non-nested, except for the cylindrical and other very special degenerate, hence structurally unstable cases.

@article{rodrigues.2005, abstract = {Numerical Grad-Shafranov (GS) equilibria with negative current density in the plasma core are computed which do not impose any particularly chosen models for the pressure and current-density profiles. This flexibility allows the profiles to be tailored so that an island unfolds in the low-field side, even for elongated plasmas, thus sustaining the negative-current core against outward forces. Among other topological results, reversed GS equilibria are also shown to be necessarily non-nested, except for the cylindrical and other very special degenerate, hence structurally unstable cases.}, added-at = {2010-01-29T17:17:25.000+0100}, author = {Rodrigues, Paulo and Bizarro, João P. S.}, biburl = {https://www.bibsonomy.org/bibtex/23a064f8c60c65e0407991fbeb1e753d2/prodrigues}, description = {TCR equilibria with (almost) arbitrary $p'$ and $ff'$.}, doi = {10.1103/PhysRevLett.95.015001}, interhash = {2f701c99874ef128e7a76023f1fcf183}, intrahash = {3a064f8c60c65e0407991fbeb1e753d2}, journal = {Phys. Rev. Lett.}, keywords = {JET current_hole current_reversal equilibrium i-mhd s_theory tokamak}, month = {June}, number = 1, numpages = {4}, pages = 015001, publisher = {American Physical Society}, timestamp = {2010-01-29T17:17:25.000+0100}, title = {Grad-Shafranov Equilibria with Negative Core Toroidal Current in Tokamak Plasmas}, url = {http://prl.aps.org/abstract/PRL/v95/i1/e015001}, volume = 95, year = 2005 }