Enhanced ionization in small rare gas clusters

Details Enhanced ionization in small rare gas clusters Enhanced ionization in small rare gas clusters

2002-07-02

arxiv.org/abs/physics/0207011v1

Physics

Atomic and Molecular Clusters

Scientific paper

10.1103/PhysRevA.67.013404

A detailed theoretical investigation of rare gas atom clusters under intense short laser pulses reveals that the mechanism of energy absorption is akin to {\it enhanced ionization} first discovered for diatomic molecules. The phenomenon is robust under changes of the atomic element (neon, argon, krypton, xenon), the number of atoms in the cluster (16 to 30 atoms have been studied) and the fluency of the laser pulse. In contrast to molecules it does not dissappear for circular polarization. We develop an analytical model relating the pulse length for maximum ionization to characteristic parameters of the cluster.

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