Abstract
The timescale for crystalline disordering when a nanoparticle is hit with an intense laser pulse scales as the inverse of the speed of ions ejected from the ensuing nanoplasma.
Highlights
The innovative technique of chirped pulse amplification of short laser pulses [1] has opened up new research areas in physics [2,3], chemistry [4,5,6], and laser engineering [7,8]
The ultrashort but intense x-ray FELs (XFELs) pulses are suitable for this time-critical technique, but for its proper implementation, understanding laser-induced plasma dynamics is of crucial importance in XFEL-based imaging experiments
We demonstrate that the presented correlation may apply to the dynamics of x-ray-induced nanoplasmas, which has been investigated by time-resolved Wide-angle x-ray scattering (WAXS) in a previous work [27]
Summary
The innovative technique of chirped pulse amplification of short laser pulses [1] has opened up new research areas in physics [2,3], chemistry [4,5,6], and laser engineering [7,8]. Such intense laser pulses, when focused to a narrow waist in the order of micrometers, can deposit an unprecedented amount of energy in a small volume of matter almost instantaneously. This extreme energy absorption in matter leads to the formation of a highly nonequilibrium plasma, resulting in an ultrafast structural change and ejection of charged fragments [7,8]. The laser-induced plasma dynamics is closely related to structure determination of biomolecules and transient species by ultrafast coherent diffraction imaging with x-ray FELs (XFELs) [11,12]. The ultrashort but intense XFEL pulses are suitable for this time-critical technique, but for its proper implementation, understanding laser-induced plasma dynamics is of crucial importance in XFEL-based imaging experiments
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