Ionization of Clusters in Intense Laser Pulses through Collective Electron Dynamics.
نویسندگان
چکیده
The motion of electrons and ions in medium-sized rare gas clusters ( approximately 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.
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ورودعنوان ژورنال:
- Physical review letters
دوره 91 22 شماره
صفحات -
تاریخ انتشار 2003