Comparing field ionization models in simulations of laser-matter interaction


Comparing field ionization models in simulations of laser-matter interaction

Garten, M.

Field ionization plays an important role in modeling the interaction of high-power, ultra-short lasers pulses with matter. Many field ionization models exist that have predictive capability at non-relativistic laser intensities and for laser pulse durations that much longer than the atomic time scales. Most existing models take a quasi-static approach to the laser field on atomic dimensions and time scales. Yet, with pulses as short as a few ~10 to ~100 as and intensities of 10 21 W/cm 2 the feasibility of these approximations becomes questionable. Still the exploration of plasma effects in relativistic laser matter interaction requires to test the boundaries of validity for these models. This thesis will take a step to point out the difficulties to be considered when existing ionization models are applied to such extreme cases.

Keywords: ionization; atomic physics; high-power; ultra-short; lasers

  • Bachelor thesis
    TU Dresden, 2013
    Mentor: Thomas Cowan, Ulrich Schramm
    0071 Seiten

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Permalink: https://www.hzdr.de/publications/Publ-24429
Publ.-Id: 24429