  We analyse non-quadratic in time Zeno effect which arises when a few-atom
state initially trapped between two high laser-induced barriers is briefly
released to free evolution. We identify the Zeno time, analyse the energy
distributions of those atoms which have escaped an remained inside the trap,
and obtain a simple relation between the survival and non-escape probabilities.
The relevant time scales are such that the effect would be observable for the
atomic species used in current laser experiments.
