Heat conduction process in tokamak hot-ion plasmas

Technical Report · Wed Jun 01 04:00:00 EDT 1983

OSTI ID:5975128

Ware, A A

The two-component ion distribution observed with active charge-exchange measurements on PDX are explained using the Fokker-Planck drift-kinetic equation and assuming ion self collisions are dominant for energy scattering. The energetic tail of the distribution, which is diffusing outwards in radius and down in energy, must retain an approximately constant effective temperature T/sub H/ = (- par. delta l n f/sub i//mpar. deltaepsilon)/sup -1/. The discontinuity in the slope of ln f/sub i/ is shown to be the boundary between the inward and outward diffusion parts of f/sub i/ and is a form of contact discontinuity. Energy-scattering collisions with electrons or circulating-beam ions, when important, modify the constancy of T/sub H/.

• Research Organization: Texas Univ., Austin (USA). Inst. for Fusion Studies
• DOE Contract Number: FG05-80ET53088
• OSTI ID: 5975128
• Report Number(s): DOE/ET/53088-96; ON: DE83014884
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700105* -- Fusion Energy-- Plasma Research-- Plasma Kinetics-Theoretical-- (-1987)
CHARGE EXCHANGE
CLOSED PLASMA DEVICES
DIFFERENTIAL EQUATIONS
DIVERTORS
ENERGY TRANSFER
EQUATIONS
FOKKER-PLANCK EQUATION
HEAT TRANSFER
ION DENSITY
ION TEMPERATURE
PARTIAL DIFFERENTIAL EQUATIONS
PDX DEVICES
THERMAL CONDUCTION
THERMONUCLEAR DEVICES
TOKAMAK DEVICES