Using perpendicular electron-cyclotron emission to diagnose the thermal barrier electrons in TMX-Upgrade. Progress report

Technical Report · Sat Jan 01 04:00:00 EST 1983

DOI:https://doi.org/10.2172/5635247· OSTI ID:5635247

Celata, C. M.

Possibilities are explored for diagnosing the hot-electron distribution function for the thermal barriers of tandem mirrors using perpendicular electron-cyclotron emission. Emission from a relativistic bimaxwellian with a loss cone is calculated in the single-particle limit. Formulae are derived for finding T/sub perpendicular/ for a bimaxwellian by measuring frequencies of the harmonic intensity maxima at optically thin frequencies, or the intensity at optically thick frequencies. A positive par. delta f/par. delta p/sub perpendicular/ in the distribution function is shown to lead to decreased absorption, and instability for low T/sub perpendicular/. Methods are discussed for diagnosing the loss-cone distribution by comparing numerical calculation with measured intensity ratios and frequencies at the harmonic peaks. Finally, the perpendicular source function in the single-particle limit for this distribution function is calculated.

• Research Organization: Dartmouth Coll., Hanover, NH (USA). Dept. of Physics and Astronomy
• DOE Contract Number: AC02-81ER53110
• OSTI ID: 5635247
• Report Number(s): DOE/ER/53110-T3; ON: DE83017419
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700102* -- Fusion Energy-- Plasma Research-- Diagnostics
BREMSSTRAHLUNG
CYCLOTRON RADIATION
DISTRIBUTION FUNCTIONS
ELECTROMAGNETIC RADIATION
ELECTRON TEMPERATURE
FUNCTIONS
MAGNETIC MIRRORS
OPEN PLASMA DEVICES
PLASMA DIAGNOSTICS
RADIATIONS
TANDEM MIRRORS
THERMAL BARRIERS
THERMONUCLEAR DEVICES
TMX DEVICES