Laser-cluster interaction: x-ray production by short laser pulses

Details Laser-cluster interaction: x-ray production by short laser pulses Laser-cluster interaction: x-ray production by short laser pulses

2005-06-29

arxiv.org/abs/physics/0506215v1

Phys. Rev. Lett. 96, 013203 (2006)

Physics

Atomic and Molecular Clusters

5 pages,4 figures, submitted to Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.96.013203

We investigate the heating of the quasi-free electrons in large rare gas clusters (N exceeding 10^5 atoms) by short laser pulses at moderate intensities (I~10^{15} Wcm^{-2}). We identify elastic large-angle backscattering of electrons at ionic cores in the presence of a laser field as an efficient heating mechanism resembling the Fermi shuttle. Its efficiency as well as the effect of collective electron motion, electron-impact ionization and cluster charging, are studied employing a mean-field classical transport simulation. Results for the absolute x-ray yields are in surprisingly good quantitative agreement with recent experimental results.

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