Fluctuation spectra of a drift wave soliton gas

A theory of drift wave turbulence is presented based on a low-density gas of drift wave solitons. The Gibb’s ensemble for the ideal gas is used to calculate the dynamical scattering form factor S(k,ω). In contrast to renormalized turbulence theory, the spectrum has a broad frequency component with Δω proportional to the fluctuation level δne/n0 at fixed k and peaks at a frequency ω≳kyvde.