Berlin 2014 – wissenschaftliches Programm
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MO: Fachverband Molekülphysik
MO 16: Atomic clusters (with A)
MO 16.4: Vortrag
Donnerstag, 20. März 2014, 11:30–11:45, BEBEL E44/46
Explosion of heteronuclear clusters irradiated by strong X-ray pulses — •Pierfrancesco Di Cintio, Ulf Saalmann, and Jan-Michael Rost — Max Planck Institute for the Physics of Complex Systems, Nöthnitzer Straße 38, 01187 Dresden, Germany
By means of N-body simulations we study the ion and electron dynamics in molecular first-row hydride clusters when exposed to intense and short X-ray pulses [1]. We find that, for a particular range of X-ray intensities, fast protons are ejected from the system on a considerably shorter time scale than that of the screened core. As a consequence, the structure of heavy atoms is kept “intact", which may be relevant in the context of X-ray based molecular imaging. Moreover the final charge states of the heavy ions are considerably lower than those of the ions in pristine atomic clusters exposed to the same laser pulses, which is in agreement with recent measurement of CH4 cluster at the LCLS in Stanford.
[1] P. Di Cintio, U. Saalmann & J.M. Rost, Phys. Rev. Lett. 111, 3401 (2013)