Ionization of clusters in intense laser pulses through collective electron dynamics

Abstract

The motion of electrons and ions in medium-sized rare gas clusters (1000 atoms) exposed to intense laser pulses is studied microscopically by means of classical molecular dynamics using a hierarchical tree code. Pulse parameters for optimum ionization are found to be wavelength dependent. This resonant behavior is traced back to a collective electron oscillation inside the charged cluster. It is shown that this dynamics can be well described by a driven and damped harmonic oscillator allowing for a clear discrimination against other energy absorption mechanisms.

4 pages (4 figures)

References in corpus (2)

• Electron release of rare gas atom clusters under an intense laser pulse
• Enhanced ionization in small rare gas clusters

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