6533b86cfe1ef96bd12c8222
RESEARCH PRODUCT
Two-electron systems in strong laser fields
Giuseppe CastigliaJonathan P. MarangosG. CamioloPietro Paolo CorsoEmilio Fiordilinosubject
PhysicsMolecolecampi laserSettore FIS/02 - Fisica Teorica Modelli E Metodi MatematiciDouble ionizationElectronFunction (mathematics)LaserLambdaAtomic and Molecular Physics and OpticsSettore FIS/03 - Fisica Della Materialaw.inventionWavelengthlawIonizationMoleculePhysics::Atomic PhysicsAtomic physicsdescription
In this paper we investigate the single and double ionization signals of ${\text{H}}_{2}$ molecules, with fixed and moving nuclei, as a function of laser intensity, for two different values of laser wavelength ($\ensuremath{\lambda}=390\text{ }\text{nm}$ and $\ensuremath{\lambda}=780\text{ }\text{nm}$), using an approach for evaluating the ionization signals which allows the investigation of relatively long-lasting pulses. The He system is first investigated to benchmark our calculation against already known results. We confirm the evidence of nonsequentiality in the ionization processes of all the systems investigated. Furthermore, we show that the nuclei motion enhances the double ionization signals by means of a mechanism which is very similar to a charge-resonant enhanced ionization (CREI) effect [Zuo and Bandrauk, Phys. Rev. A 52, R2511 (1995)].
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2009-06-04 |