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This paper compares experimental results for ohmic discharges on the Frascati Tokamak Upgrade (FTU) with the predictions of the conventional neoclassical theory (NCT), the extended neoclassical theory (ENCT) and the pseudoneoclassical theory (PNCT). An extended set of diagnostics is used to determine the radial plasma flow velocity, v(r){r}, the effective ion charge number, Z(eff) and the total thermal energy, W. The expressions provided by the NCT, ENCT and PNCT are then evaluated using the experimental electron density and temperature profiles, loop voltage and total plasma current in order to obtain theoretical values of v(r){r} and Z(eff). When these theoretical values are compared with the experimental ones, the ENCT is found to give the best agreement, thus confirming the results of previous studies.

Additional information

Authors: BRACCO G ET AL., ENEA, Centro Ricerche Energia Frascati, Roma (IT);SEGRE S E, IIa Università degli Studi di Roma, Dipartimento di Fisica (IT)
Bibliographic Reference: Report: RT/ERG/FUS/93/11 EN (1993) 24 pp.
Availability: Available from Servizio Studi e Documentazione, ENEA, Centro Ricerche Energia Frascati, C.P. 65-00044 Frascati, Roma (IT)
Record Number: 199311667 / Last updated on: 1994-11-28
Original language: en
Available languages: en