  We investigate quantum vortex ring dynamics at scales smaller than the
inter-vortex spacing in quantum turbulence. Through geometrical arguments and
high resolution numerical simulations we examine the validity of simple
estimates of the mean free path and the structure of vortex rings
post-reconnection. We find that a large proportion of vortex rings remain
coherent objects where approximately $75\%$ of their energy is preserved. This
leads us to consider the effectiveness of energy transport in turbulent
tangles. Moreover, we show that in low density tangles, appropriate for the
ultra-quantum regime, ring emission cannot be ruled out as an important
mechanism for energy dissipation. However at higher vortex line densities,
typically associated with the quasi-classical regime, loop emission is expected
to make a negligible contribution to energy dissipation, even allowing for the
fact that our work shows rings can survive multiple reconnection events. Hence
the Kelvin wave cascade seems the most plausible mechanism leading to energy
dissipation.
