  We investigate the strong acceleration properties of the radiation reaction
force and identify a new and promising limiting acceleration feature in the
Eliezer-Ford-O'Connell model; in the strong field regime, for many field
configurations, we find an upper limit to acceleration resulting in a bound to
the rate of radiation emission. If this model applies, strongly accelerated
particles are losing energy at a much slower pace than predicted by the usual
radiation reaction benchmark, the Landau-Lifshitz equation, which certainly
cannot be used in this regime. We explore examples involving various "constant"
electromagnetic field configurations and study particle motion in a light plane
wave as well as in a material medium.
