title: Experimental evidence of self-regulation of fluctuations by time-varying flows.
abstract: We report the first extended experimental results indicating that radially localized time-varying potential structures, which possess many of the characteristics of zonal flows, are generated by strong fluctuations. Experiments performed in the H-1 heliac show that these poloidally symmetric flows are nonlinearly coupled to other fluctuations and are responsible for significant modifications in fluctuations and in the fluctuation-driven transport.
authors.affiliation: Plasma Research Laboratory, Australian National University, Canberra ACT 0200 Australia. Michael.Shats@anu.edu.au
authors.forename: M G
authors.initials: MG
authors.lastname: Shats
authors.forename: W M
authors.initials: WM
authors.lastname: Solomon