This article is cited in 6 papers

Interaction of laser radiation with matter

Highly stable plasma source produced on the liquid-gallium surface by a femtosecond laser pulse

V. M. Gordienko^ab, M. V. Kurilova^a, E. V. Rakov^a, A. B. Savel'ev-Trofimov^ab, D. S. Uryupina<sup>ab

a</sup> Lomonosov Moscow State University, Faculty of Physics
^b International Laser Center of Moscow State University

Abstract: Experimental results are presented which demonstrate that a plasma produced on the melted-gallium surface by a femtosecond laser pulse of intensity above 10¹⁶ W cm^-2 is an efficient and stable source of incoherent hard X-rays with a pulse repetition rate of 10 Hz. For gallium heated up to 270°C, the X-ray yield decreased by ~25% [from (2.2 ± 0.4) × 10^-4 % to (1.7 ± 0.4) × 10^-4 %] after 50000 laser shots, while the average energy of hot electrons decreased from 9.3 ± 0.9 to 9.0 ± 1.1 keV.

PACS: 42.65.Re, 52.50.Jm, 52.57.Bc, 52.38.Ph

Received: 15.12.2006
Revised: 24.01.2007

 English version: Quantum Electronics, 2007, 37:7, 651–655

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