http://www.cnr.it/ontology/cnr/individuo/prodotto/ID237933
TOTAL RADIATION LOSSES AND EMISSIVITY PROFILES IN RFX (Articolo in rivista)
- Type
- Label
- TOTAL RADIATION LOSSES AND EMISSIVITY PROFILES IN RFX (Articolo in rivista) (literal)
- Anno
- 1998-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1088/0029-5515/38/5/301 (literal)
- Alternative label
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- L. MARRELLI; P. MARTIN; A. MURARI; G. SPIZZO (literal)
- Pagina inizio
- Pagina fine
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
- http://iopscience.iop.org/0029-5515/38/5/301/ (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
- Rivista
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
- Note
- ISI Web of Science (WOS) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- Consorzio RFX, Padova, Italy (literal)
- Titolo
- TOTAL RADIATION LOSSES AND EMISSIVITY PROFILES IN RFX (literal)
- Abstract
- In the framework of adding new information to the reversed eld pinch (RFP) confinement database, the radiation emitted by RFX plasmas has been investigated using an eight chord bolometric camera, whose detectors have been calibrated absolutely. From the experimental data the emissivity profies have been reconstructed by means of a generalized tomography reconstruction algorithm.
This analysis confirms that the radiation emitted in RFX is systematically concentrated at the
edge. The dependence of the emitted power on the plasma density shows that the radiation increases
approaching the high density regime, but it rarely goes beyond 30% of the input power for stationary
discharges. This behaviour is strongly dependent on the concentration of impurities but, in any case, in
RFX there is no evidence of disruptions. A simple local energy balance allows a preliminary evaluation
of the radial heat flux profie to be obtained. These measurements indicate that an active impurity
screening mechanism is acting in the edge and that transport is the major energy loss mechanism in
RFX. (literal)
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