Darmstadt 2008 – scientific programme

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A: Fachverband Atomphysik

A 16: Atomic Clusters

A 16.4: Talk

Thursday, March 13, 2008, 09:15–09:30, 3D

Energy absorption of composite clusters in intense laser fields — •Alexey Mikaberidze, Ulf Saalmann, and Jan-Michael Rost — Max Planck Institut für Physik komplexer Systeme, Dresden, Deutschland

Energy absorption of xenon clusters embedded in helium droplets from intense femtosecond laser pulses is studied theoretically. For sufficiently long pulses we find earlier and more efficient resonant energy absorption for the embedded xenon cluster than for the pure one in agreement with experiments [1]. This effect is due to a plasma resonance in the helium droplet initiated by the charged xenon core [2]. For ultrashort double pulses with variable delay (pump-probe technique) both plasma resonances, due to the helium droplet and the xenon cluster itself, are identified and the conditions are given [2] which should allow for an experimental observation of both resonances.

[1] T. Döppner et al., Eur. Phys. J. D, 24, 157 (2003).

[2] A. Mikaberidze, U. Saalmann, J. M. Rost, to be published (2007)