Fragmentation in Intense Time-Dependent Fields

摘要

The mechanism of enhanced ionization or charge-assisted tunneling, first discovered for small linear molecules under an intense laser pulse, is briefly reviewed. Then it is shown that this mechanism also applies to rare gas clusters in strong laser fields. A suitable observable which can be accessed experimentally, is the degree of ionization of the cluster as a function of the laser pulse length. Examples are given for Ne16 and Ar16.