Atomic physics effects on dissipative toroidal drift wave stability

Journal Article · Sat Aug 01 04:00:00 EDT 1992 · Physics of Fluids B; (United States)

DOI:https://doi.org/10.1063/1.860172· OSTI ID:7034257

Beer, M A; Hahm, T S ^[1]

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1. Princeton Plasma Physics Laboratory, Princeton University, Princeton, New Jersey 08543 (United States)

The effects of atomic physics processes such as ionization, charge exchange, and radiation on the linear stability of dissipative drift waves are investigated in toroidal geometry, both numerically and analytically. For typical Tokamak Fusion Test Reactor (TFTR) ({ital Plasma} {ital Physics} {ital and} {ital Controlled} {ital Nuclear} {ital Fusion} {ital Research}, 1986 (IAEA, Vienna, 1987), Vol. 1, p. 51) and Texas Experimental Tokamak (TEXT) (Nucl. Technol. Fusion {bold 1}, 479 (1981)) edge parameters, overall linear stability is determined by the competition between the destabilizing influence of ionization and the stabilizing effect due to the electron temperature gradient. An analytical expression for the linear marginal stability condition, {eta}{sup crit}{sub {ital e}}, is derived. The instability is most likely to occur at the extreme edge of tokamaks with a significant ionization source and a steep electron density gradient.

• DOE Contract Number: AC02-76CH03073
• OSTI ID: 7034257
• Journal Information: Physics of Fluids B; (United States), Journal Name: Physics of Fluids B; (United States) Vol. 4:8; ISSN 0899-8221; ISSN PFBPE
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700310 -- Plasma Confinement-- (1992-)
700340* -- Plasma Waves
Oscillations
& Instabilities-- (1992-)
ANNULAR SPACE
CHARGE EXCHANGE
CLOSED CONFIGURATIONS
CLOSED PLASMA DEVICES
CONFIGURATION
DRIFT INSTABILITY
INSTABILITY
IONIZATION
MAGNETIC FIELD CONFIGURATIONS
PLASMA INSTABILITY
PLASMA MICROINSTABILITIES
SPACE
TEXT DEVICES
TFTR TOKAMAK
THERMONUCLEAR DEVICES
TOKAMAK DEVICES
TOROIDAL CONFIGURATION