Experimental analysis of drift waves destabilisation in a toroidal plasma

This paper concerns the study of the development of turbulence in a toroidal magnetoplasma [C. Riccardi et al., Plasma Phys. 36, 1791 (1994)]. This analysis has been performed by evaluating wave number, frequency spectra, and bicoherence coefficients of density fluctuations associated to drift wave propagation. Plasma parameters have been changed over a wide range, in order to identify and characterize density fluctuations both in absence and in presence of nonlinear phenomena. © 1997 American Institute of Physics.