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 | * The boundary between the inside of a magnetic island and the surrounding region. | ||
== See also == | == See also == | ||
Revision as of 09:39, 15 February 2010
A separatrix is a boundary between domains with distinct dynamical behaviour (phase curves) in a dynamical system. [1] [2]
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 the inside of a magnetic island and the surrounding region.