Separatrix: Difference between revisions

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A separatrix is a boundary between domains with distinct dynamical behaviour.
A separatrix is a boundary between domains with distinct dynamical behaviour (phase curves) in a dynamical system.
<ref>[http://eom.springer.de/s/s084540.htm Separatrix (Encyclopaedia of Mathematics)]</ref>
<ref>[http://eom.springer.de/s/s084540.htm Separatrix (Encyclopaedia of Mathematics)]</ref>
<ref>[[:Wikipedia:Separatrix]]</ref>
<ref>[[:Wikipedia:Separatrix]]</ref>


In the fusion context, the term is used to describe:
In the fusion context, the term refers to the trajectories of the magnetic field lines and is used to describe:
* The boundary between closed and open field lines, separating the toroidally confined region from the region where field lines connect to material surfaces (such as divertors, limiters, or walls) - also known as the Scrape-Off Layer (SOL). This boundary is also called the Last Closed Flux Surface (LCFS).
* The boundary between closed and open field lines, separating the toroidally confined region from the region where field lines connect to material surfaces (such as divertors, limiters, or walls) - also known as the Scrape-Off Layer (SOL). This boundary is also called the Last Closed Flux Surface (LCFS).
* The boundary between the inside of a magnetic island to the surrounding region.
* The boundary between the inside of a magnetic island and the surrounding region.


== See also ==
== See also ==

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