  Earth's magnetotail region provides a unique environment to study plasma
turbulence. We investigate the turbulence developed in an exhaust produced by
magnetic reconnection at the terrestrial magnetotail region. Magnetic and
velocity spectra show broad-band fluctuations corresponding to the inertial
range, with Kolmorogov $-5/3$ scaling, indicative of a well developed turbulent
cascade. We examine the mixed, third-order structure functions, and obtain a
linear scaling in the inertial range. This linear scaling of the third-order
structure functions implies a scale-invariant cascade of energy through the
inertial range. A Politano-Pouquet third-order analysis gives an estimate of
the incompressive energy transfer rate of $\sim
10^{7}~\mathrm{J\,kg^{-1}\,s^{-1}}$. This is four orders of magnitude higher
than the values typically measured in 1 AU solar wind, suggesting that the
turbulence cascade plays an important role as a pathway of energy dissipation
during reconnection events in the tail region.
