H-mode: Difference between revisions

60 bytes removed ,  19 September 2009
Line 24: Line 24:
However, other factors can also contribute, such as reduced viscous damping, which might explain the dependence on rational surfaces observed in the stellarator W7-AS.
However, other factors can also contribute, such as reduced viscous damping, which might explain the dependence on rational surfaces observed in the stellarator W7-AS.
<ref>[http://dx.doi.org/10.1088/0741-3335/42/7/306 H. Wobig and J. Kisslinger, ''Viscous damping of rotation in Wendelstein 7-AS'', Plasma Phys. Control. Fusion '''42''' (2000) 823-841]</ref>
<ref>[http://dx.doi.org/10.1088/0741-3335/42/7/306 H. Wobig and J. Kisslinger, ''Viscous damping of rotation in Wendelstein 7-AS'', Plasma Phys. Control. Fusion '''42''' (2000) 823-841]</ref>
Sheared flow can also be generated by imposing an external radial electric field (biasing), or by external momentum input.
Sheared flow can also be generated by external momentum input.


In summary, the H-mode is the consequence of a self-organizing process in the plasma.
In summary, the H-mode is the consequence of a self-organizing process in the plasma.