  The collision of magnetic reconnection jets is studied by means of a three
dimensional numerical simulation at kinetic scale, in the presence of a strong
guide field. We show that turbulence develops due to the jets collision
producing several current sheets in reconnection outflows, aligned with the
guide field direction. The turbulence is mainly two-dimensional, with stronger
gradients in the plane perpendicular to the guide field and a low wave-like
activity in the parallel direction. First, we provide a numerical method to
isolate the central turbulent region. Second, we analyze spatial second-order
structure function and prove that turbulence is confined in this region.
Finally, we compute local magnetic and electric frequency spectra, finding a
trend in the sub-ion range that differs from typical cases for which the Taylor
hypothesis is valid, as well as wave activity in the range between ion and
electron cyclotron frequencies. Our results are relevant to understand
observations of reconnection jets collisions in space plasmas.
