Atomic physics effects on dissipative toroidal drift wave stability

Technical Report · Sat Feb 01 04:00:00 EST 1992

DOI:https://doi.org/10.2172/5609688· OSTI ID:5609688

Beer, M A; Hahm, T S

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 TFTR and TEXT 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}{sub e}{sup crit}, 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.

• Research Organization: Princeton Univ., NJ (United States). Plasma Physics Lab.
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC02-76CH03073
• OSTI ID: 5609688
• Report Number(s): PPPL-2831; ON: DE92010007
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700340* -- Plasma Waves
Oscillations
& Instabilities-- (1992-)
700380 -- Elementary & Classical Processes in Plasmas-- (1992-)
ATOMIC PHYSICS
CHARGE EXCHANGE
CLOSED PLASMA DEVICES
DISPERSION RELATIONS
DRIFT INSTABILITY
ELECTRON TEMPERATURE
INSTABILITY
IONIZATION
PHYSICS
PLASMA INSTABILITY
PLASMA MICROINSTABILITIES
TEMPERATURE GRADIENTS
THERMONUCLEAR DEVICES
TOKAMAK DEVICES