Separatrix: Difference between revisions

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In the fusion context, the term refers to the trajectories of the magnetic field lines and is used to describe:
In the fusion context, the term refers to the trajectories of the magnetic field lines and is used to describe:
* In the case of a [[Divertor|divertor]] configuration in [[Tokamak|tokamaks]], or a similar situation in other devices: the boundary between closed and open field lines, separating the toroidally confined region from the region where field lines connect to material surfaces.
* In the case of a [[Divertor|divertor]] configuration in [[Tokamak|tokamaks]], or a similar situation in other devices: the boundary between closed and open field lines, separating the toroidally confined region from the region where field lines connect to material surfaces.
* The boundary between the inside of a magnetic island and the surrounding region.
* The boundary between the inside of a [[Magnetic island|magnetic island]] and the surrounding region.


In the case of plasmas that are limited by material objects (limiters or walls),
In the case of plasmas that are limited by material objects (limiters or walls),