Abstract
A possibility of obtaining particles with an energy of as high as a few GeV using Coulomb explosion of laser-irradiated spherical microtargets is discussed for the Exawatt Center for Extreme Light Studies (XCELS) facility, characterized by the record-high power and ultrashort duration of generated laser pulses. Theoretical justification is given for the possibility of experimental implementation of the relativistic Coulomb explosion of large (micron and submicron) spherical targets using multi-side irradiation with several high-intensity laser beams, which is currently unattainable for the existing high-power laser systems. The proposed experiment is substantiated by the results of theoretical and analytical studies of ion acceleration at relativistic Coulomb explosion of microtargets composed of either one-type ions or a combination of impurity light ions and majority heavy ions. Spatial–temporal and spectral characteristics of accelerated ions having a relativistic energy and quasi-monochromatic spectrum are found. This study makes it possible to predetermine the characteristics of ions with record-high energies from Coulomb-exploded spherical microtargets and introduce theoretical justification of the experiment on the XCELS facility in the single-beam and multibeam modes.
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V. F. Kovalev acknowledges the partial support of the Ministry of Science and Higher Education of Russian Federation (state contract no. 122041100137-4).
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Translated by A. Sin’kov
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Kovalev, V.F., Bychenkov, V.Y. Relativistic Coulomb Explosion of a Spherical Microtarget. Bull. Lebedev Phys. Inst. 50 (Suppl 7), S762–S771 (2023). https://doi.org/10.3103/S1068335623190089
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DOI: https://doi.org/10.3103/S1068335623190089