Dynamics of electrons in liquid water excited with an ultrashort VUV laser pulse

Klaus Huthmacher; Nikita Medvedev; Bärbel Rethfeld

doi:10.1117/12.888987

18 May 2011 Dynamics of electrons in liquid water excited with an ultrashort VUV laser pulse

Klaus Huthmacher, Nikita Medvedev, Bärbel Rethfeld

Proceedings Volume 8077, Damage to VUV, EUV, and X-ray Optics III; 807716 (2011) https://doi.org/10.1117/12.888987
Event: SPIE Optics + Optoelectronics, 2011, Prague, Czech Republic

Abstract

We describe theoretically the interaction of an ultrashort VUV-XUV laser pulse (FWHM = 10fs, photon energy of 100eV) with liquid water. Incident photons ionize water molecules and create free electrons. These excited electrons interact via elastic collisions with other water molecules and produce secondary electrons due to impact ionization. To track each free electron and its collisions event by event, we use the Monte Carlo method. This approach allows us to describe the non-equilibrium behaviour of electrons in irradiated water on femtosecond timescales. As results we present the transient electron particle- and energy-distributions. Furthermore, we exhibit a time resolved description of the total amount of electrons and we also show the corresponding energy redistribution: change in the kinetic energy of excited electrons, increase of the energy of holes, and energizing of water molecules via elastic collisions.

Citation Download Citation

Klaus Huthmacher, Nikita Medvedev, and Bärbel Rethfeld "Dynamics of electrons in liquid water excited with an ultrashort VUV laser pulse", Proc. SPIE 8077, Damage to VUV, EUV, and X-ray Optics III, 807716 (18 May 2011); https://doi.org/10.1117/12.888987

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