Abstract
Interaction between high-power ultrashort laser pulse and giant clusters (microdroplets) consisting of 109 to 1010 atoms is considered. The microdroplet size is comparable to the laser wavelength. A model of the evolution of a microdroplet plasma induced by a high-power laser pulse is developed, and the processes taking place after interaction with the pulse are analyzed. It is shown theoretically that the plasma is superheated: its temperature is approximately equal to the ionization potential of an ion having a typical charge. The microdroplet plasma parameters are independent of the pulse shape and duration. The theoretical conclusions are supported by experimental studies of x-ray spectra conducted at JAERI, where a 100-terawatt Ti-sapphire laser system was used to irradiate krypton and xenon microdroplets by laser pulses with pulse widths of 30 to 500 fs and intensities of 6×1016 to 2×1019W/cm2.
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Translated from Zhurnal Éksperimental’no\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l}\) i Teoretichesko\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l}\) Fiziki, Vol. 125, No. 6, 2004, pp. 1283–1294.
Original Russian Text Copyright © 2004 by Smirnov, Skobelev, Magunov, Faenov, Pikuz, Fukuda, Yamakawa, Akahane, Aoyama, Inoue, Ueda.
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Smirnov, M.B., Skobelev, I.Y., Magunov, A.I. et al. Microdroplet evolution induced by a laser pulse. J. Exp. Theor. Phys. 98, 1123–1132 (2004). https://doi.org/10.1134/1.1777624
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DOI: https://doi.org/10.1134/1.1777624