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Time-resolved x-ray imaging of a laser-induced nanoplasma and its neutral residuals

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Time-resolved x-ray imaging of a laser-induced nanoplasma and its neutral residuals
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The evolution of individual, large gas-phase xenon clusters, turned into a nanoplasma by a high power infrared laser pulse, is tracked from femtoseconds up to nanoseconds after laser excitation via coherent diffractive imaging, using ultra-short soft x-ray free electron laser pulses. A decline of scattering signal at high detection angles with increasing time delay indicates a softening of the cluster surface. Here we demonstrate, for the first time a representative speckle pattern of a new stage of cluster expansion for xenon clusters after a nanosecond irradiation. The analysis of the measured average speckle size and the envelope of the intensity distribution reveals a mean cluster size and length scale of internal density fluctuations. The measured diffraction patterns were reproduced by scattering simulations which assumed that the cluster expands with pronounced internal density fluctuations hundreds of picoseconds after excitation.

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with an highly intense exit polls from a free electron laser and nanoparticles can be imaged by recording elastically scattered photons in the particle the resulting diffraction pattern includes the geometrical information about this particle board however
whether any making the particle another customers formed in our sample is destroyed review part by economic forces we were interested in how radiation damage occurs and what timescale with an infrared laser pulse
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