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Titolo:
Particle transport in DIII-D discharges with internal regions of enhanced confinement and counter injected neutral beams
Autore:
Baker, DR; Greenfield, CM; DeBoo, JC; Wade, MR; Stallard, BW;
Indirizzi:
Gen Atom Co, San Diego, CA 92186 USA Gen Atom Co San Diego CA USA 92186Gen Atom Co, San Diego, CA 92186 USA Oak Ridge Natl Lab, Oak Ridge, TN 37382 USA Oak Ridge Natl Lab Oak Ridge TN USA 37382 tl Lab, Oak Ridge, TN 37382 USA Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94550 USA Univ CalifLawrence Livermore Natl Lab Livermore CA USA 94550 A 94550 USA
Titolo Testata:
PHYSICS OF PLASMAS
fascicolo: 5, volume: 8, anno: 2001,
parte:, 1
pagine: 1565 - 1572
SICI:
1070-664X(200105)8:5<1565:PTIDDW>2.0.ZU;2-N
Fonte:
ISI
Lingua:
ENG
Soggetto:
REVERSED MAGNETIC SHEAR; ANOMALOUS TRANSPORT; D TOKAMAK; PERFORMANCE; PROFILES; PLASMAS; DRIVEN;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
24
Recensione:
Indirizzi per estratti:
Indirizzo: Baker, DR Gen Atom Co, POB 85608, San Diego, CA 92186 USA Gen Atom Co POB 85608 San Diego CA USA 92186 Diego, CA 92186 USA
Citazione:
D.R. Baker et al., "Particle transport in DIII-D discharges with internal regions of enhanced confinement and counter injected neutral beams", PHYS PLASMA, 8(5), 2001, pp. 1565-1572

Abstract

An analysis of experimentally measured particle transport in tokamak plasmas with negative central magnetic shear is presented. The analysis is presented in terms of a simple model for turbulent transport which allows the separation of diagonal and off diagonal terms and allows the direct comparison of particle and energy transport. Comparing the measured fluxes to the fluxes predicted by a simple quasi analytical model which specifies a relation between the diagonal and off diagonal terms allows an understanding of the reason for the difference between energy and particle fluxes. In the center of discharges with a region of enhanced confinement (or internal transport barrier), the ion thermal diffusivity becomes small and comparable to neoclassical values and the particle diffusivity also becomes small and approaches the neoclassical values. (C) 2001 American Institute of Physics.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 10/07/20 alle ore 12:46:02