Plasma confinement studies in the ISX-A tokamak

Journal Article · Mon Mar 05 04:00:00 EST 1979 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.42.655· OSTI ID:6132875

Murakami, M; Neilson, G H; Howe, H C; Jernigan, T C; Bates, S C; Bush, C E; Colchin, R J; Dunlap, J L; Edmonds, P H; Hill, K W; Isler, R C; Ketterer, H E; King, P W; McNeill, D W; Mihalczo, J T; Neidigh, R V; Pare, V K; Saltmarsh, M J; Wilgen, J B; Zurro, B

Gross-energy-confinement times (tau/sub E/) in the ISX-A (Impurity Study Experiment) tokamak exceeded predictions of the usual empirical scaling relations. We attribute this performance to reductions of impurity radiation and magnetohydrodynamically driven loss channels. The value of tau/sub E/ reached a limit as a function of plasma density. We suggest that this limit is due to a transition from electron- to ion-dominated loss regimes. Maximum attainable values of tau/sub E/ increased with discharge current, in agreement with this interpretation.

• Research Organization: Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830
• OSTI ID: 6132875
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 42:10; ISSN PRLTA
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700101* -- Fusion Energy-- Plasma Research-- Confinement
Heating
& Production
700102 -- Fusion Energy-- Plasma Research-- Diagnostics
CONFINEMENT
CONFINEMENT TIME
CRYOGENIC FLUIDS
DEUTERIUM
ELECTRIC DISCHARGES
ELEMENTS
ENERGY
FLUIDS
GETTERING
HEATING
HYDROGEN
HYDROGEN ISOTOPES
HYDROMAGNETIC WAVES
ION TEMPERATURE
ISOTOPES
ISX TOKAMAK
JOULE HEATING
LIGHT NUCLEI
METALS
NONMETALS
NUCLEI
ODD-ODD NUCLEI
PLASMA CONFINEMENT
PLASMA DIAGNOSTICS
PLASMA HEATING
STABLE ISOTOPES
THERMONUCLEAR REACTORS
TITANIUM
TOKAMAK TYPE REACTORS
TRANSITION ELEMENTS