Study of the Taylor scale and intermittency in broadband magnetic fluctuations in a magnetized turbulent plasma wind-tunnel

Turbulent magnetic fluctuations are ubiquitous in both astrophysical and laboratory plasmas that exhibit power-law broadband fluctuations and intermittency. Power-law like broadband fluctuations indicate an energy-cascade where energy is injected at large scales and cascades to smaller and smaller scales where energy is ``dissipated'' via some mechanism. Intermittency in the magnetic fluctuations is associated with current sheets or coherent structures. This talk focuses on understanding the dissipation scale and the intermittent behavior of the magnetic fluctuations. The fluid Taylor scale is investigated as a potential dissipation scale. The Taylor scale is obtained through multi-point correlations of broadband fluctuations. From the spatial and temporal correlations respectively, the measured Taylor scales are $2\pm cm$ and $3\pm 1cm$. Intermittency in magnetic fluctuations is investigated through a statistical analysis of temporal and spatial increments: the probability density function of increments and its moments, i.e. structure functions.