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arXiv · 1806.05485

Multiple ionization of argon via xuv-photon absorption induced by 20-gigawatt high-harmonic pulses

A. Nayak·I. Orfanos·I. Makos·M. Dumergue·S. Kuhn·E. Skantzakis·B. Bodi·K. Varju·C. Kalpouzos·H. I. B. Banks·A. Emmanouilidou·D. Charalambidis·P. Tzallas
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Abstract

We report the observation of multiple ionization of Argon through multi-XUV-photon absorption induced by an unprecedentedly powerful laser driven high-harmonic-generation source. Comparing the measured intensity dependence of the yield of the different Argon charge states with numerical calculations we can infer the different channels -direct and sequential- underlying the interaction. While such studies were feasible so far only with FEL sources, this work connects highly-non-linear-XUV-processes with the ultra-short time scales, inherent to the harmonic pulses, and highlights the advanced perspectives of emerging large scale laser research infrastructures.

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A. Nayak, I. Orfanos, I. Makos, M. Dumergue, S. Kuhn, E. Skantzakis, B. Bodi, K. Varju, C. Kalpouzos, H. I. B. Banks, A. Emmanouilidou, D. Charalambidis, P. Tzallas. 2018-06-14. Multiple ionization of argon via xuv-photon absorption induced by 20-gigawatt high-harmonic pulses. https://doi.org/10.1103/physreva.98.023426

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