http://www.cnr.it/ontology/cnr/individuo/prodotto/ID81047
Gradient length driven transport in EC heated FTU tokamak (Contributo in atti di convegno)
- Type
- Label
- Gradient length driven transport in EC heated FTU tokamak (Contributo in atti di convegno) (literal)
- Anno
- 2001-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1063/1.1424206 (literal)
- Alternative label
Jacchia A. 1, De Luca F. 1, Bruschi A. 1, Cirant S. 1, Granucci G. 1, Sozzi C. 1 and Tudisco O. 2 (2001)
Gradient length driven transport in EC heated FTU tokamak
in 14th Topical Conference on Radio Frequency Power in Plasmas, Oxnard, California, 2001
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Jacchia A. 1, De Luca F. 1, Bruschi A. 1, Cirant S. 1, Granucci G. 1, Sozzi C. 1 and Tudisco O. 2 (literal)
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- http://proceedings.aip.org/resource/2/apcpcs/595/1/342_1 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#note
- AIP Conference Proceedings 595, 342-345 (literal)
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- Interpretazione di risultati sperimentali presentata ad una Conferenza specialistica (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- 1 IFP CNR, Milano
2 ENEA, Frascati (literal)
- Titolo
- Gradient length driven transport in EC heated FTU tokamak (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#isbn
- Abstract
- Steady state electron heat transport of FTU high density plasmas (iin« 0.45-1 1020
m~3) during Electron Cyclotron Resonance Heating (ECRH) are compared to predictions of a model
based on the assumption of a threshold gradient length, Lfc, in the electron temperature Te beyond
which electron thermal conductivity, %e, switches from low to high values. The model accounts for the
stiffness of Te slope observed in FTU plasmas heated with quite different radial shapes of the ECRH
power deposition profile. These profiles are achieved by toroidal field tuning and steering two gaussian
beams delivering up to 850 kW to the plasma in a radial position, p, ranging from p ~ 0.25 to p « 0.5.
Plasma response is modelled by assuming the electron conductivity as %e = XeO + a Te^^2 (l/Lj -
l/Lfc)^2') nere Te^ reflects the gyro-Bohm assumption, %EURQ represents the heat transport for Lf>Ljc
while a, the so-called stiffness coefficient, is adjusted to cope with the observed experimental data. The
term (1/L? - l/L^)1^ which sets in for LT the same stiffness coefficient, a, and the same 'low' conductiviy XeO. (literal)
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