@prefix dcat: <http://www.w3.org/ns/dcat#> .
@prefix dct: <http://purl.org/dc/terms/> .
@prefix foaf: <http://xmlns.com/foaf/0.1/> .
@prefix vcard: <http://www.w3.org/2006/vcard/ns#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

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    dct:description """
              The reversed field pinch (RFP) is a magnetic configuration germane to the tokamak, that produces most of its magnetic field by the currents flowing inside the plasma; external coils provide only a small edge toroidal field whose sign is reversed with respect to the central one. Because of the presence of magnetic turbulence and chaos, the RFP had been considered for a long period as a terrible confinement configuration. Then strong enhancements were triggered in the RFX-mod RFP in Padua (Italy): a self-organized helical state with an internal transport barrier develops, and a broad zone of the plasma becomes hot (above 1 keV for a central magnetic field above 0.8 T). The possibility of this helical state and of the corresponding improvement in confinement had been theoretically predicted by three-dimensional nonlinear visco-resistive magnetohydrodynamic (MHD) simulations. This course summarizes the present experimental and theoretical knowledge about this helical state, in particular with the following issues: Lawson criterion, dynamo, MHD and magnetic field bifurcations, analytical description, analogy with the nonlinear tearing mode, attractiveness of the RFP configuration for a reactor, usefulness for fusion science and dynamo physics. The new paradigm for the RFP supports its reappraisal as a low-external field, non-disruptive, ohmically heated approach to magnetic fusion, exploiting both self-organization and technological simplicity.
            """ ;
    dct:identifier "hal-00909102" ;
    dct:issued "2026-05-08T02:41:18.187791"^^xsd:dateTime ;
    dct:language "en" ;
    dct:modified "2026-05-08T02:41:18.187798"^^xsd:dateTime ;
    dct:publisher <https://rec.harvest-normandie.data4citizen.com/organization/cce9db95-46d9-4dc2-84b6-764215d0a002> ;
    dct:title "What is a reversed field pinch?" ;
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            vcard:fn "CCSD" ] ;
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        "physphysphys-plasm-phphysics-physicsphysics-physicsplasma-physics-physicsplasm-ph",
        "preprints-working-papers-" ;
    dcat:landingPage <https://hal.science/hal-00909102> .

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    dct:issued "2026-05-08T02:41:18.192780"^^xsd:dateTime ;
    dct:modified "2026-05-08T02:41:18.178223"^^xsd:dateTime ;
    dct:title "What is a reversed field pinch?" ;
    dcat:accessURL <https://hal.science/hal-00909102> .

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