Atomic clusters of various sizes irradiated with short intense pulses of VUV radiation
arXiv:0712.1094 · doi:10.1209/0295-5075/82/24002
Abstract
Non-equilibrium processes following the irradiation of atomic clusters with short pulses of vacuum ultraviolet radiation are modelled using kinetic Boltzmann equations. The dependence of the ionization dynamics on the cluster size is investigated. The predictions on: (i) the maximal and average ion charge created, (ii) ion charge state distribution, (iii) average energy absorbed per atom, (iv) spatial charge distribution, and (v) thermalization scales are obtained for spherical xenon clusters containing: 20, 70, 2500 and 90000 atoms. These clusters were exposed to single rectangular pulses of vacuum ultraviolet radiation of various pulse intensities, I ~ 10^{12}-10^{14} W/cm^2 and durations < 50 fs, at a fixed integrated radiation flux of F=0.4 J/cm^2. The results obtained are found to be in good agreement with the available experimental data, especially the dependence on the cluster size, if it is assumed that the ions from the positively charged outer layer of the cluster constitute the dominant contribution to the experimentally measured ion charge state distribution.
arXiv comment6 pages, 5 figures
References in corpus (12)
- Femtosecond Diffractive Imaging with a Soft-X-ray Free-Electron Laser
- SASE FEL with energy-chirped electron beam and its application for generation of attosecond pulses
- Dynamics in a cluster under the influence of intense femtosecond hard x-ray pulses
- Small rare gas clusters in soft X-ray pulses
- Xenon Clusters in Intense VUV Laser Fields
- A new technique to generate 100 GW-level attosecond X-ray pulses from the X-ray SASE FELs
- Scheme for Attophysics Experiments at a X-ray SASE FEL
- Modelling dynamics of samples exposed to free-electron-laser radiation with Boltzmann equations
- Imaging atom-clusters by hard x-ray free electron lasers
- Terawatt-scale sub-10-fs laser technology - key to generation of GW-level attosecond pulses in X-ray free electron laser
- Clusters under strong VUV pulses: A quantum-classical hybrid-description incorporating plasma effects
- Interaction of intense vuv radiation with large xenon clusters