This article is cited in 3 papers

International Scientific and Technical Conference "Ultrafast Optical Phenomena". October 4-8, 2021, Moscow
Laser physics and laser optics

Effective line X-ray generation by chirped femtosecond laser pulses interaction with copper target at local helium flow

A. A. Garmatina^a, M. M. Nazarov^a, P. A. Shcheglov^a, M. V. Chashchin^a, V. A. Aleshkevich^b, B. G. Bravy^c, V. M. Gordienko^b, V. Ya. Panchenko<sup>a

a</sup> National Research Centre "Kurchatov Institute", Moscow
^b Lomonosov Moscow State University, Faculty of Physics
^c Department of Nanophotonics, Institute of Problems of Chemical Physics, Chernogolovka, Russia

Abstract: Efficient laser-plasma line X-ray source was developed. X-ray generation was optimized by the laser pulse duration alteration and using the local helium blowing into the microplasma region on a copper target located in atmospheric conditions. Measured K$_\alpha$ x-ray flux of 2 $\cdot$ 10$^7$ ph/pulse/2$\pi$ sr and conversion efficiency of 10$^{-5}$ were achieved correspondingly.

Keywords: femtosecond laser pulses, X-rays.

Received: 01.11.2021
Revised: 12.12.2021
Accepted: 30.12.2021

DOI: 10.21883/os.2022.04.52266.64-21

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