Abstract

A far-infrared scattering experiment was installed on the ELMO bumpy torus experiment at Oak Ridge National Laboratory [Plasma Physics and Controlled Nuclear Fusion Research (IAEA, Vienna, 1975), Vol. II, p. 141]. The design allowed for coupled scanning of spatial and wave vector parameters while recording the frequency spectrum. Coherent waves and incoherent density fluctuations were observed for varying plasma conditions. Also, coherent waves were recorded in conjunction with ion cyclotron heating fast wave heating experiments, which demonstrated fast wave penetration into the plasma and ion-Bernstein wave conversion between harmonic zones.

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