4,422
edits
Sawtooth: Difference between revisions
Jump to navigation
Jump to search
no edit summary
(Created page with "A sawtooth is a magnetic reconnection phenomenon occurring in many tokamak plasmas. The name is due to the characteristic waveform of many ...") |
No edit summary |
||
| (2 intermediate revisions by the same user not shown) | |||
| Line 2: | Line 2: | ||
The name is due to the characteristic [[Wikipedia:Sawtooth wave|waveform]] of many diagnostic signals. | The name is due to the characteristic [[Wikipedia:Sawtooth wave|waveform]] of many diagnostic signals. | ||
The reconnection leads to the rapid expulsion of energy from a central region (usually contained with the ''q'' = 1 rational surface). | The reconnection leads to the rapid expulsion of energy from a central region (usually contained with the [[Safety factor|''q'' = 1]] rational surface). | ||
The region in which the temperature goes down during the crash is bounded by the inversion radius (see figure). | |||
This leads to the fast increase of energy content in an annular region surrounding the central region. | This leads to the fast increase of energy content in an annular region surrounding the central region. | ||
The region where the temperature goes up during the crash is bounded by the inversion radius and the mixing radius (see figure). | |||
[[File:Sawtooth.png|420px|thumb|right|Sketch of temperature profiles before (black continuous line) and after (red dashed line) a sawtooth crash]] | |||
== See also == | == See also == | ||
* [[Wikipedia:Tokamak sawtooth|Tokamak sawtooth]] | * [[Wikipedia:Tokamak sawtooth|Tokamak sawtooth]] | ||