Experimental characterization of the electron heat transport in low-density ASDEX upgrade plasmas

Experimental characterization of the electron heat transport in low-density ASDEX upgrade plasmas

The electron heat transport is investigated in ASDEX Upgrade conventional L-mode plasmas with pure electron heating provided by electron-cyclotron heating (ECH) at low density. Under these conditions, steady-state and ECH modulation experiments indicate without ambiguity that electron heat transport...

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Veröffentlicht in:Physical review letters 2001-06, Vol.86 (24), p.5498-5501
Hauptverfasser: Ryter, F, Imbeaux, F, Leuterer, F, Fahrbach, H U, Suttrop, W
Format: Artikel
Sprache:eng
Schlagworte:
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
ELECTRONS
HEATING
MODULATION
TRANSPORT
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Zusammenfassung:The electron heat transport is investigated in ASDEX Upgrade conventional L-mode plasmas with pure electron heating provided by electron-cyclotron heating (ECH) at low density. Under these conditions, steady-state and ECH modulation experiments indicate without ambiguity that electron heat transport exhibits a clear threshold in inverted Delta T(e)/T(e) and also suggest that it has a gyro-Bohm character.
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.86.5498