Optically thin perpendicular electron-cyclotron emission from hot electrons in TMX-U

Conference · Tue Mar 04 04:00:00 EST 1986

OSTI ID:6092186

James, R A; Lasnier, C J; Ellis, R F

Perpendicular electron-cyclotron emission (PECE) from relativistic (T/sub H/ approx. 100 to 400 keV) hot electrons within the thermal-barrier region of TMX-U is detected at 35, 60, 94 and 98 GHz. For the operating regime of TMX-U these signals are optically thin (tau<<1) and thus proportional to the radial hot electron line density. A relativistic code is used to calculate the theoretical temperature dependence of the perpendicular emission coefficient, j perpendicular(..omega..,T/sub H/), for each of the detected frequencies. This dependence has been verified experimentally by x-ray measurements of the hot electron temperature, T/sub H/. The observed qualitative agreement demonstrates that optically thin PECE signals can be used to determine the temporal evolution of T/sub H/. An inability to absolutely calibrate the present PECE waveguide system has prevented quantitative agreement.

• Research Organization: Lawrence Livermore National Lab., CA (USA); Maryland Univ., Baltimore (USA)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6092186
• Report Number(s): UCRL-93882; CONF-860324-11; ON: DE86008027
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700104* -- Fusion Energy-- Plasma Research-- Plasma Kinetics-Experimental-- (-1987)
BREMSSTRAHLUNG
CYCLOTRON RADIATION
CYCLOTRON RESONANCE
ELECTROMAGNETIC RADIATION
ELECTRON CYCLOTRON-RESONANCE
ELECTRON TEMPERATURE
ELECTRONS
ELEMENTARY PARTICLES
FERMIONS
LEPTONS
MAGNETIC MIRRORS
OPEN PLASMA DEVICES
RADIATIONS
RESONANCE
SPECTRA
TANDEM MIRRORS
THERMONUCLEAR DEVICES
TMX DEVICES
WAVEGUIDES
X-RAY SPECTRA