The Greenwald density limit is a phenomenological limit that restricts the achievable density in a thermonuclear fusion device. This is a longstanding issue for research in this field, since density appears in the figure of merit defining the efficiency of the future fusion reactor, namely the triple product nrT . Despite this importance, the density limit defies a unified, convincing theoretical explanation. Recently a series of papers [1,2,3] point out the role of a combination of radiative collapse and magnetohydrodynamic (MHD) instabilities resonating in the edge plasma, in determining the limit.
The Greenwald density limit as a convective cell and radiative phenomenon in Reversed Field Pinch
Spizzo Gianluca;Agostini Matteo;Bonfiglio Daniele;Terranova David;Zuin Matteo;Cappello Susanna
2021
Abstract
The Greenwald density limit is a phenomenological limit that restricts the achievable density in a thermonuclear fusion device. This is a longstanding issue for research in this field, since density appears in the figure of merit defining the efficiency of the future fusion reactor, namely the triple product nrT . Despite this importance, the density limit defies a unified, convincing theoretical explanation. Recently a series of papers [1,2,3] point out the role of a combination of radiative collapse and magnetohydrodynamic (MHD) instabilities resonating in the edge plasma, in determining the limit.File in questo prodotto:
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