|Title||Threshold Heat-Flux Reduction by Near-Resonant Energy Transfer|
|Publication Type||Journal Article|
|Year of Publication||2021|
|Authors||P.W. Terry, P.Y. Li, M.J. Pueschel, G.G. Whelan|
|Journal||Physical Review Letters|
Near-resonant energy transfer to large-scale stable modes is shown to reduce transport above the linear critical gradient, contributing to the onset of transport at higher gradients. This is demonstrated for a threshold fluid theory of ion temperature gradient turbulence based on zonal-flow-catalyzed transfer. The heat flux is suppressed above the critical gradient by resonance in the triplet correlation time, a condition enforced by the wave numbers of the interaction of the unstable mode, zonal flow, and stable mode.
|Alternate Title||Phys. Rev. Lett.|
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