  The effective transparency of rare-gas clusters, post-interaction with an
extreme ultraviolet (XUV) pump pulse, is predicted by using an atomistic hybrid
quantum-classical molecular dynamics model. We find there is an intensity range
for which an XUV probe pulse has no lasting effect on the average charge state
of a cluster after being saturated by an XUV pump pulse: the cluster is
effectively transparent to the probe pulse. The intensity range for which this
phenomena occurs increases with cluster size, and thus is amenable to
experimental verification. We present predictions for clusters at the peak of
the laser pulse profile, as well as the expected experimental time-of-flight
signal integrated over the laser profile. Since our model uses only atomic
photoionization rates, significant experimental deviations from our predictions
would provide evidence for modified ionization potentials due to plasma
effects.
