  We investigate turbulence in magnetic reconnection jets in the Earth's
magnetotail using data from the Magnetospheric Multiscale spacecraft. We show
that signatures of a limited inertial range are observed in many reconnection
jets. The observed turbulence develops on the time scale of a few ion
gyroperiods, resulting in intermittent multifractal energy cascade from the
characteristic scale of the jet down to the ion scales. We show that at sub-ion
scales, the fluctuations are close to mono-fractal and predominantly kinetic
Alfv\'en waves. The observed energy transfer rate across the inertial range is
$\sim 10^8~\mathrm{J}~\mathrm{kg}^{-1}~\mathrm{s}^{-1}$, which is the largest
reported for space plasmas so far.
