Core-electron confinement scaling in EBT-S

Technical Report · Thu Jul 01 04:00:00 EDT 1982

DOI:https://doi.org/10.2172/5225229· OSTI ID:5225229

Uckan, T.; Berry, L. A.; Hillis, D. L.; Richards, R. K.

Recent high microwave experiments in the ELMO Bumpy Torus-Scale (EBT-S) at power levels through 200 kW cw at 28 GHz cover a broad parameter range (density, temperature, potential well, etc), the operating window (T-mode) increases with power, and the plasma characteristics change significantly with operating parameters (power and pressure). Because the density profiles are observed to change with these parameters, comparisons with zero-dimensional theoretical expectations for the complete data set are not possible. However, it is shown that for controlled power and pressure combinations scale lengths and e phi/T/sub e/ are constant and the electron transport in EBT-S scales neoclassically; the power balance (P/sub ..mu../ approx. n/sup 2//T/sub e//sup 1/2/) and particle balance (tau/sub E//tau/sub p/ approx. constant) are consistent with neoclassical predictions.

• Research Organization: Oak Ridge National Lab., TN (USA)
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 5225229
• Report Number(s): ORNL/TM-8117; ON: DE82018211
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700101* -- Fusion Energy-- Plasma Research-- Confinement
Heating
& Production
CONFINEMENT
ECR HEATING
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ELECTRON TEMPERATURE
ELMO BUMPY TORUS
ELMO DEVICES
ENERGY BALANCE
HEATING
HIGH-FREQUENCY HEATING
MAGNETIC MIRRORS
MICROWAVE RADIATION
OPEN PLASMA DEVICES
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RADIATIONS
SCALING LAWS
THERMONUCLEAR DEVICES
TRANSPORT THEORY