dorsal/arxiv
View SchemaInteraction of intense vuv radiation with large xenon clusters
| Authors | Zachary B. Walters, Robin Santra, Chris H. Greene |
|---|---|
| Categories | |
| ArXiv ID | physics/0510187 |
| URL | https://arxiv.org/abs/physics/0510187 |
| DOI | 10.1103/PhysRevA.74.043204 |
Abstract
The interaction of atomic clusters with short, intense pulses of laser light to form extremely hot, dense plasmas has attracted extensive experimental and theoretical interest. The high density of atoms within the cluster greatly enhances the atom--laser interaction, while the finite size of the cluster prevents energy from escaping the interaction region. Recent technological advances have allowed experiments to probe the laser--cluster interaction at very high photon energies, with interactions much stronger than suggested by theories for lower photon energies. We present a model of the laser--cluster interaction which uses non-perturbative R-matrix techniques to calculate inverse bremsstrahlung and photoionization cross sections for Herman-Skillman atomic potentials. We describe the evolution of the cluster under the influence of the processes of inverse bremsstrahlung heating, photoionization, collisional ionization and recombination, and expansion of the cluster. We compare charge state distribution, charge state ejection energies, and total energy absorbed with the Hamburg experiment of Wabnitz {\em et al.} [Nature {\bf 420}, 482 (2002)] and ejected electron spectra with Laarmann {\em et al.} [Phys. Rev. Lett. {\bf 95}, 063402 (2005)].
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"abstract": "The interaction of atomic clusters with short, intense pulses of laser light\nto form extremely hot, dense plasmas has attracted extensive experimental and\ntheoretical interest. The high density of atoms within the cluster greatly\nenhances the atom--laser interaction, while the finite size of the cluster\nprevents energy from escaping the interaction region. Recent technological\nadvances have allowed experiments to probe the laser--cluster interaction at\nvery high photon energies, with interactions much stronger than suggested by\ntheories for lower photon energies. We present a model of the laser--cluster\ninteraction which uses non-perturbative R-matrix techniques to calculate\ninverse bremsstrahlung and photoionization cross sections for Herman-Skillman\natomic potentials. We describe the evolution of the cluster under the influence\nof the processes of inverse bremsstrahlung heating, photoionization,\ncollisional ionization and recombination, and expansion of the cluster. We\ncompare charge state distribution, charge state ejection energies, and total\nenergy absorbed with the Hamburg experiment of Wabnitz {\\em et al.} [Nature\n{\\bf 420}, 482 (2002)] and ejected electron spectra with Laarmann {\\em et al.}\n[Phys. Rev. Lett. {\\bf 95}, 063402 (2005)].",
"arxiv_id": "physics/0510187",
"authors": [
"Zachary B. Walters",
"Robin Santra",
"Chris H. Greene"
],
"categories": [
"physics.atom-ph",
"physics.comp-ph"
],
"doi": "10.1103/PhysRevA.74.043204",
"title": "Interaction of intense vuv radiation with large xenon clusters",
"url": "https://arxiv.org/abs/physics/0510187"
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