Observation of coherent radiation at the electron plasma frequency from a tokamak
- 1 June 1985
- journal article
- research article
- Published by AIP Publishing in Physics of Fluids
- Vol. 28 (6) , 1877-1880
- https://doi.org/10.1063/1.864931
Abstract
High‐resolution spectral measurements have been made of the fluctuating electron plasma frequency (ωpe) radiation from Alcator C. Results of spectral measurements with a dispersive delay line indicate that one or more very narrow, irregularly spaced components are present in each ‘‘burst’’ of ωpe emission. A direct‐sampling technique with an instrumental resolution of 200 kHz has been used to resolve the individual features of a burst. Features as narrow as 350 kHz have been observed (Δf/f=6×10−6). This result suggests that a highly coherent process is responsible for the emission.Keywords
This publication has 5 references indexed in Scilit:
- Cavity mode analysis of plasma frequency waves in inhomogeneous cylindrical plasmasPhysics of Fluids, 1985
- Observation of Lower-Hybrid Current Drive at High Densities in the AlcatorTokamakPhysical Review Letters, 1984
- High-resolution spectral measurements of fluctuating ωp e emission from AlcatorPhysics of Fluids, 1983
- Observations of fluctuating ωp emission in Alcator tokamaksPhysics of Fluids, 1980
- Real-time spectral analysis of far-infrared laser pulses using an SAW dispersive delay lineApplied Physics Letters, 1979