We describe measurements of non-linear interactions between drift waves and law-frequency flute-like modes in the UMIST quadrupole. We present experimental measurements of the bispectrum, and a l s ~ results from a technique of "amplitude correlation" which we believe provides a more direct way of determining the direction of the energy flow. On the basis of the results we propose a model olenergy flaw in the drift-wave spectrum: the observed spectrum contains regions af growth at high frequency and damping at low frequency, with flow dawn the spectrum via a cascade mediated by the flute-like modes.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.