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Angular distribution of the bremsstrahlung emission during lower-hybrid current drive on PLT

Technical Report ·
DOI:https://doi.org/10.2172/5642336· OSTI ID:5642336
The bremsstrahlung emission from the PLT tokamak during lower-hybrid current drive has been measured as a function of angle between the magnetic field and the emission direction. The emission is peaked strongly in the forward direction, indicating a strong anisotropy of the electron-velocity distribution. The data demonstrate the existence of a nearly flat tail of the velocity distribution, which extends out to approximately 500 keV and which is interpreted as the plateau created by Landau damping of the lower-hybrid waves.
Research Organization:
Princeton Univ., NJ (USA). Plasma Physics Lab.
DOE Contract Number:
AC02-76CH03073
OSTI ID:
5642336
Report Number(s):
PPPL-2225; ON: DE85013762
Country of Publication:
United States
Language:
English