Generation and effects of electromotive force in turbulent stochastic reconnection

Reconnection is an important process that rules dissipation and diffusion of magnetic energy in plasmas. It already clear its rate enhanced by turbulence, reconnection itself may increase stochasticity, but the main mechanism connects these two effects still not completely understood. The aim this work to identify, from terms electromotive force, dominant physical responsible for enhancing turbulent We employ full three-dimensional numerical simulations turbulence driven stochastic estimate production cross-helicity, amount produced residual helicity, determine relation between quantities rate. observe development force studied models with plasma-$\beta = 0.1 - 2$ Lundquist number $S=10^{-5}-10^{-4}$. helicity develop large-scale current sheet, latter decreasing diffusion. demonstrate reconnection, apart can produce a significant cross-helicity as well. ratio, however, has no correlation show sufficiently large value necessary condition fast occur. results suggest inherent fields, enhancement possibly caused controlled helicity.