This title appears in the Scientific Report :
2006
Please use the identifier:
http://hdl.handle.net/2128/1884 in citations.
Please use the identifier: http://dx.doi.org/10.1103/PhysRevLett.96.035004 in citations.
Change of the magnetic-field topology by an ergodic divertor on the plasma structure and transport
Change of the magnetic-field topology by an ergodic divertor on the plasma structure and transport
The magnetic-field perturbation produced by the dynamic ergodic divertor in TEXTOR changes the topology of the magnetic field in the plasma edge, creating an open chaotic system. The perturbation spectrum contains only a few dominant harmonics and therefore it can be described by an analytical model...
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Personal Name(s): | Jakubowski, M. W. |
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Schmitz, O. / Abdullaev, S. S. / Brezinsek, S. / Finken, K. H. / Krämer-Flecken, A. / Lehnen, M. / Samm, U. / Spatschek, K. H. / Unterberg, B. / Wolf, R. / TEXTOR, Team. | |
Contributing Institute: |
Institut für Plasmaphysik; IPP |
Published in: | Physical review letters, 96 (2006) S. 035004 |
Imprint: |
College Park, Md.
APS
2006
|
Physical Description: |
035004 |
DOI: |
10.1103/PhysRevLett.96.035004 |
Document Type: |
Journal Article |
Research Program: |
Fusion |
Series Title: |
Physical Review Letters
96 |
Subject (ZB): | |
Link: |
Get full text OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://dx.doi.org/10.1103/PhysRevLett.96.035004 in citations.
The magnetic-field perturbation produced by the dynamic ergodic divertor in TEXTOR changes the topology of the magnetic field in the plasma edge, creating an open chaotic system. The perturbation spectrum contains only a few dominant harmonics and therefore it can be described by an analytical model. The modeling is performed in the vacuum approximation without assuming a backreaction of the plasma and does not rely on any experimentally obtained parameters. It is shown that this vacuum approximation predicts in many details the experimentally observed plasma structure. Several experiments have been performed to prove that the plasma edge behavior is defined mostly by the magnetic topology of the perturbed volume. The change in the transport can be explained with the knowledge of only the magnetic structures; i.e., the ergodic pattern dominates the plasma properties. |