Reversed field pinch (original) (raw)
Der Begriff reversed field pinch (RFP) bezeichnet eine Anlage, um Fusionsplasma einzusperren. Sie ist ein toroidaler Pinch (engl. für Quetsche), welcher eine einzigartige Magnetfeldkonfiguration benutzt, um Plasma magnetisch einzusperren. Sie wird hauptsächlich für die Fusionsforschung verwendet.
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| dbo:abstract | Der Begriff reversed field pinch (RFP) bezeichnet eine Anlage, um Fusionsplasma einzusperren. Sie ist ein toroidaler Pinch (engl. für Quetsche), welcher eine einzigartige Magnetfeldkonfiguration benutzt, um Plasma magnetisch einzusperren. Sie wird hauptsächlich für die Fusionsforschung verwendet. (de) A reversed-field pinch (RFP) is a device used to produce and contain near-thermonuclear plasmas. It is a toroidal pinch which uses a unique magnetic field configuration as a scheme to magnetically confine a plasma, primarily to study magnetic confinement fusion. Its magnetic geometry is somewhat different from that of the more common tokamak. As one moves out radially, the portion of the magnetic field pointing toroidally reverses its direction, giving rise to the term reversed field. This configuration can be sustained with comparatively lower fields than that of a tokamak of similar power density. One of the disadvantages of this configuration is that it tends to be more susceptible to non-linear effects and turbulence. This makes it a useful system for studying non-ideal (resistive) magnetohydrodynamics. RFPs are also used in studying astrophysical plasmas, which share many common features. The largest Reversed Field Pinch device presently in operation is the RFX (R/a = 2/0.46) in Padua, Italy. Others include the MST (R/a = 1.5/0.5) in the United States, EXTRAP T2R (R/a = 1.24/0.18) in Sweden, RELAX (R/a = 0.51/0.25) in Japan, and (R/a = 1.4/0.4) in China. (en) La strizione a campo rovesciato (Reversed Field Pinch - RFP) è una configurazione di campo magnetico per il confinamento dei plasmi. Possiede la caratteristica peculiare, da cui prende il nome, di avere il verso del campo magnetico toroidale al bordo opposto rispetto a quello in asse. A differenza del tokamak, che richiede un campo magnetico prodotto principalmente da bobine esterne, nell'RFP la maggior parte del campo magnetico necessario al confinamento è generato dal plasma stesso; per questo motivo l'RFP è più semplice da costruire di un tokamak, ma la capacità di confinare il plasma a parità di campo magnetico prodotto risulta inferiore. I maggiori esperimenti in questa configurazione sono Reversed Field eXperiment (RFX) in Italia, (MST) negli USA, EXTRAP T2R in Svezia e TPE-RX in Giappone. (it) 逆磁場ピンチ(ぎゃくじばピンチ 英: Reversed field pinch)は、プラズマを閉じ込める磁場閉じ込め方式の一種。 (ja) |
| dbo:thumbnail | wiki-commons:Special:FilePath/Rfp_q_profile.png?width=300 |
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| rdfs:comment | Der Begriff reversed field pinch (RFP) bezeichnet eine Anlage, um Fusionsplasma einzusperren. Sie ist ein toroidaler Pinch (engl. für Quetsche), welcher eine einzigartige Magnetfeldkonfiguration benutzt, um Plasma magnetisch einzusperren. Sie wird hauptsächlich für die Fusionsforschung verwendet. (de) 逆磁場ピンチ(ぎゃくじばピンチ 英: Reversed field pinch)は、プラズマを閉じ込める磁場閉じ込め方式の一種。 (ja) A reversed-field pinch (RFP) is a device used to produce and contain near-thermonuclear plasmas. It is a toroidal pinch which uses a unique magnetic field configuration as a scheme to magnetically confine a plasma, primarily to study magnetic confinement fusion. Its magnetic geometry is somewhat different from that of the more common tokamak. As one moves out radially, the portion of the magnetic field pointing toroidally reverses its direction, giving rise to the term reversed field. This configuration can be sustained with comparatively lower fields than that of a tokamak of similar power density. One of the disadvantages of this configuration is that it tends to be more susceptible to non-linear effects and turbulence. This makes it a useful system for studying non-ideal (resistive) mag (en) La strizione a campo rovesciato (Reversed Field Pinch - RFP) è una configurazione di campo magnetico per il confinamento dei plasmi. Possiede la caratteristica peculiare, da cui prende il nome, di avere il verso del campo magnetico toroidale al bordo opposto rispetto a quello in asse. A differenza del tokamak, che richiede un campo magnetico prodotto principalmente da bobine esterne, nell'RFP la maggior parte del campo magnetico necessario al confinamento è generato dal plasma stesso; per questo motivo l'RFP è più semplice da costruire di un tokamak, ma la capacità di confinare il plasma a parità di campo magnetico prodotto risulta inferiore. (it) |
| rdfs:label | Reversed field pinch (de) Reversed field pinch (it) 逆磁場ピンチ型 (ja) Reversed field pinch (en) |
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