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Updated: Jul 11, 2026

Merging Ion Concentration Polarization between Juxtaposed Ion Exchange Membranes to Block the Propagation of the Polarization Zone
Published on: February 23, 2017
Enhanced confinement and quasi-single-helicity regimes induced by poloidal current drive
D Terranova1, A Alfier, F Bonomo
1Consorzio RFX, Associazione Euratom-ENEA sulla Fusione-Corso Stati Uniti, 4, I-35127 Padova, Italy.
Abstract:
Enhanced confinement regimes with quasihelical symmetry are reproducibly obtained in the modified reversed field pinch eXperiment (RFX)-mod by reducing the level of internal chaos through the combination of a smooth magnetic boundary (through a virtual shell scheme) and the oscillating poloidal current drive technique. The plasma moves from a chaotic multiple helicity towards a quasi-single-helicity regime with a magnetic island showing high temperature and soft x-ray emissivity. The chaos reduction involves also the plasma outside the island allowing for a global enhanced confinement with an improvement up to 50%.
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