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Scaling law: Difference between revisions
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<ref>[http://dx.doi.org/10.1088/0029-5515/47/9/025 A. Dinklage et al, ''Physical model assessment of the energy confinement time scaling in stellarators'', Nuclear Fusion '''47''', 9 (2007) 1265-1273]</ref> | <ref>[http://dx.doi.org/10.1088/0029-5515/47/9/025 A. Dinklage et al, ''Physical model assessment of the energy confinement time scaling in stellarators'', Nuclear Fusion '''47''', 9 (2007) 1265-1273]</ref> | ||
== Power degradation == | === Power degradation === | ||
One of the remarkable and initially unexpected properties of magnetically confined plasmas is the reduction of the [[Energy confinement time|energy confinement time]] τ<sub>E</sub> as the heating power ''P'' is increased. Typically: | One of the remarkable and initially unexpected properties of magnetically confined plasmas is the reduction of the [[Energy confinement time|energy confinement time]] τ<sub>E</sub> as the heating power ''P'' is increased. Typically: | ||
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This phenomenon is therefore a form of plasma [[Self-Organised Criticality|self-organisation]]. | This phenomenon is therefore a form of plasma [[Self-Organised Criticality|self-organisation]]. | ||
== Size scaling == | === Size scaling === | ||
The L-mode scaling is of the "Bohm" type, while the ELMy H-mode is of the "gyro-Bohm" type. | The L-mode scaling is of the "Bohm" type, while the ELMy H-mode is of the "gyro-Bohm" type. | ||