Nonlinear pertubative electron heat transport study in the ASDEX Upgrade tokamak (Articolo in rivista)

Type

• Articolo in rivista (Classe)
• Prodotto della ricerca (Classe)

Label

• Nonlinear pertubative electron heat transport study in the ASDEX Upgrade tokamak (Articolo in rivista) (literal)

Anno

• 2005-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

• 10.1088/0029-5515/45/1/005 (literal)

Alternative label

• Jacchia A., De Luca F., Ryter F., Bruschi A., Leuterer F., Neu R., Pereverzev G., Suttrop W., Wagner D. and ASDEX Upgrade Team (2005)
  Nonlinear pertubative electron heat transport study in the ASDEX Upgrade tokamak
  in Nuclear fusion
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Jacchia A., De Luca F., Ryter F., Bruschi A., Leuterer F., Neu R., Pereverzev G., Suttrop W., Wagner D. and ASDEX Upgrade Team (literal)

Pagina inizio

• 40 (literal)

Pagina fine

• 47 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url

• http://iopscience.iop.org/0029-5515/45/1/005/ (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 45 (literal)

Rivista

• Nuclear fusion (Rivista)

Note

• ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• [ 1 ] ENEA, Istituto di Fisica del Plasma, EURATOM Assoc, CRE, Milan, Italy [ 2 ] Univ Milan, INFM, Milan, Italy [ 3 ] Univ Milan, Dipartimento Fis, Milan, Italy [ 4 ] Max Planck Inst Plasma Phys, EURATOM Assoc, D-85748 Garching, Germany (literal)

Titolo

• Nonlinear pertubative electron heat transport study in the ASDEX Upgrade tokamak (literal)

Abstract

• Electron heat transport properties have been investigated by means of localized steady-state and modulated electron cyclotron heating in the ASDEX Upgrade tokamak. The experimental findings have been successfully compared with the electron temperature with the model assumption of a threshold gradient length, L-Tc, (1/L-T = -delT(e0)/T-e0), T-e0 below which the electron thermal conductivity measured under steady-state conditions, chi(ePB), shows a sudden increase and the heat conduction 'seen' by a temperature perturbation, chi(eHP), switches from low to high values. In this work electron cyclotron heating (ECH) power is used both to modify the steady-state gradient length and to induce a nonlinear transition from low to high electron heat transport at the position where the temperature gradient crosses its critical (or threshold) value. Steady-state ECH has been injected at different radial positions and the changes induced in electron heat transport have been studied by means of cold pulses launched from the plasma boundary. Cold pulses, obtained by injecting radiating impurities by means of laser blow off of silicon, have proved to be a flexible tool for investigating both the radial position of the step in chi(eHp) and the dependence on local plasma parameters of the underlying physical mechanism. (literal)

Prodotto di

• Istituto di fisica del plasma \"Piero Caldirola\" (IFP) (Istituto)
• Fisica e Tecnologia del Plasma e della Fusione Termonucleare (ET.P05.001.001) (Modulo)

Autore CNR

• ALESSANDRO BRUSCHI (Unità di personale interno)
• FRANCA DE LUCA (Persona)
• ALESSANDRO JACCHIA (Persona)

Incoming links:

Prodotto

• Istituto di fisica del plasma \"Piero Caldirola\" (IFP) (Istituto)
• Fisica e Tecnologia del Plasma e della Fusione Termonucleare (ET.P05.001.001) (Modulo)

Autore CNR di

• ALESSANDRO BRUSCHI (Unità di personale interno)
• ALESSANDRO JACCHIA (Persona)
• FRANCA DE LUCA (Persona)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Nuclear fusion (Rivista)