This title appears in the Scientific Report :
2003
Please use the identifier:
http://dx.doi.org/10.1103/PhysRevLett.91.095001 in citations.
Please use the identifier: http://hdl.handle.net/2128/1792 in citations.
Synergy of anomalous transport and radiation in density limit
Synergy of anomalous transport and radiation in density limit
The critical plasma density n(cr) above which the edge anomalous transport in tokamaks is dominated by drift resistive ballooning instability is found analytically. In this transport regime, the drastic increase of particle losses and drop of the edge temperature provoke a strong increase in impurit...
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Personal Name(s): | Tokar, M. Z. |
---|---|
Contributing Institute: |
Institut für Plasmaphysik; IPP |
Published in: | Physical review letters, 91 (2003) S. 095001 |
Imprint: |
College Park, Md.
APS
2003
|
Physical Description: |
095001 |
DOI: |
10.1103/PhysRevLett.91.095001 |
Document Type: |
Journal Article |
Research Program: |
Kernfusion und Plasmaforschung |
Series Title: |
Physical Review Letters
91 |
Subject (ZB): | |
Link: |
Get full text OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/1792 in citations.
The critical plasma density n(cr) above which the edge anomalous transport in tokamaks is dominated by drift resistive ballooning instability is found analytically. In this transport regime, the drastic increase of particle losses and drop of the edge temperature provoke a strong increase in impurity radiation, and thermal equilibrium does not exist if the density is ramped up above the ultimate limit n(max). Because of the nonlinear character of impurity radiation, this density limit n(max) is very close to n(cr) and practically does not change with the ion effective charge. The importance of the synergy between the anomalous transport and impurity radiation for the density limit phenomenon is confirmed by the results of numerical simulations. |