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Kvantovaya Elektronika, 2018 Volume 48, Number 7, Pages 648–652 (Mi qe16857)

This article is cited in 8 papers

Interaction of laser radiation with matter. Laser plasma

Generation of X-ray radiation from a plasma in a microchannel of a copper target located in the air under the action of soft-focused femtosecond laser pulses with an intensity of 100 TW cm-2

A. A. Garmatinaab, I. A. Zhvaniyaa, F. V. Potemkinac, V. M. Gordienkoa

a Faculty of Physics, Lomonosov Moscow State University
b National Research Centre "Kurchatov Institute", Moscow
c International Laser Center of Moscow State University

Abstract: We have studied the dependence of X-ray radiation yield in the range of more than 3 keV from a microchannel in a copper target on the laser pulse number at a (0.7–4.0) × 1014 W cm-2 intensities of femtosecond laser radiation. A technique for estimating the intensity of laser radiation acting on the target using the slope of the X-ray bremsstrahlung spectrum is proposed. A possibility of using this technique for estimating the intensity in a femtosecond laser filament is considered.

Keywords: X-ray radiation, femtosecond plasma, laser ablation, hot electrons.

Received: 07.04.2018
Revised: 22.05.2018


 English version:
Quantum Electronics, 2018, 48:7, 648–652

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© Steklov Math. Inst. of RAS, 2025