A power-balance model for the L-mode radiative density limit in fusion plasmas

A 1D cylindrical power-balance model of the radiation density limit (DL) gives a unified description of this phenomenon for stellarators, reversed field pinches and L-mode tokamaks (Zanca et al 2019 Nucl. Fusion 59 126011). The DL scaling laws for the three different configurations are all derived f...

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Bibliographic Details
Published in:Plasma physics and controlled fusion 2022-05, Vol.64 (5), p.54006
Main Authors: Zanca, P, Sattin, F, Escande, D F, Auriemma, F
Format: Article
Language:English
Subjects:
density
fusion
L-mode
limit
plasmas
power-balance model
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Summary:A 1D cylindrical power-balance model of the radiation density limit (DL) gives a unified description of this phenomenon for stellarators, reversed field pinches and L-mode tokamaks (Zanca et al 2019 Nucl. Fusion 59 126011). The DL scaling laws for the three different configurations are all derived from a combination of just two equations: (a) a single-fluid heat-transport equation; (b) on-axis Ohm’s law with Spitzer resistivity, taken in a suitable limit for the stellarator. Here, we present a refined version of the model, alongside further experimental evidence supporting its successful application.
ISSN:0741-3335
1361-6587
DOI:10.1088/1361-6587/ac57cc