Title variants
Languages of publication
Abstracts
The dynamics of small (<55 atoms) argon clusters ionized by an intense, infrared, femtosecond laser pulse is studied using a Bloch-like hydrodynamic model. Evolution of both free electrons and ions formed in the cluster explosion process is examined. Oscillations of the electron cloud in a rare-gas atomic cluster are described as a motion of a fluid obeying Bloch-like hydrodynamic equations. Our theoretical approach includes all possible ionization mechanisms: tunnel (or field) ionization both by an external laser field, and by an internal field due to the space-charge distribution inside the cluster, as well as electron-impact (or collisional) ionization. The results of our simulations are compared both with experimental findings and with predictions of other theoretical models.
Discipline
- 42.50.Hz: Strong-field excitation of optical transitions in quantum systems; multiphoton processes; dynamic Stark shift(for multiphoton ionization and excitation of atoms and molecules, see 32.80.Rm, and 33.80.Rv, respectively)
- 32.80.Rm: Multiphoton ionization and excitation to highly excited states
- 36.40.-c: Atomic and molecular clusters(see also 61.46.-w Nanoscale materials in condensed matter)
- 07.05.Tp: Computer modeling and simulation
Journal
Year
Volume
Issue
Pages
3-12
Physical description
Dates
published
2004-07
received
2004-05-07
Contributors
author
- Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland
author
- Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland
References
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Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv106n105kz