Impact of punctual flat magnetic shear on the field line transport

Autor(es)

Abud, C. V. ^{[1, 2]} ; Caldas, I. L. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Inst Phys, BR-05315970 Sao Paulo - Brazil

^[2] Univ Fed Goas, Dept Math IMTec, BR-75704020 Catalao - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Physics of Plasmas; v. 22, n. 6 JUN 2015.
• Citações Web of Science: 0

Resumo

We investigate the magnetic field line transport for tokamak equilibria with monotonic magnetic shear perturbed by resonant fields. We show that when the local profile is flat at the plasma edge a transport barrier can be created leading to a field line transport reduction. This transport reduction is due to the field lines topological modifications, caused by a local flattened profile that reduces the global field lines escape pattern. The results are obtained by applying a symplectic map that describes perturbed magnetic field lines in large aspect ratio tokamaks. (C) 2015 AIP Publishing LLC. (AU)

• Processo FAPESP: 11/19296-1 - Dinâmica não linear
• Beneficiário: Iberê Luiz Caldas
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 13/17989-5 - Fênomenos não-twist em sistemas Hamiltonianos multidimensionais
• Beneficiário: Celso Vieira Abud
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado