Berlin 2014 – wissenschaftliches Programm

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MO: Fachverband Molekülphysik

MO 8: Electronic Spectroscopy 1

MO 8.2: Vortrag

Dienstag, 18. März 2014, 14:30–14:45, BEBEL HS213

Laser-assisted electron scattering in strong-field ionization of dense water vapor by few-cycle laser pulses — •Martin Wilke, Ruba Al-Obaidi, Alexandre Moguilevski, Alexander Kothe, Jan Metje, Igor Yurevich Kiyan, and Emad Flear Aziz — Joint Ultrafast Dynamics Lab in Solutions and at Interfaces (JULiq) Helmholtz-Zentrum Berlin, Albert-Einstein-Str. 15, 12489 Berlin and Freie Universität Berlin, FB Physik, Arnimallee 14, 14195 Berlin, Germany

Strong-field ionization of dense water gas was studied by means of angle-resolved time-of-flight electron spectroscopy. In contrast to diluted gases where above-threshold ionization (ATI) and high-order ATI (HATI) of single molecules dominate electron emission a collective effect of radiation absorption by neighboring particles known as laser-assisted electron scattering (LAES) was observed. This study was realized irradiating the vicinity of a liquid-microjet in a high vacuum chamber by 8-cycle near-infrared (1450 nm) laser pulses. Due to this combination strong-field photoelectron spectroscopy at liquid interfaces under high vacuum condition was facilitated.