Optics and Spectroscopy
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Effective line X-ray generation by chirped femtosecond laser pulses interaction with copper target at local helium flow
Garmatina A. A1, Nazarov M. M.1, Shcheglov P. A. 1, Chaschin M. V. 1, Aleshkevich V. A. 2, Bravy B. G. 3, Gordienko V. M. 2, Panchenko V. Ya1
1National Research Center “Kurchatov Institute”, Moscow, Russia
2Moscow State University, Moscow, Russia
3Department of Nanophotonics, Institute of Problems of Chemical Physics, Chernogolovka, Russia
2Moscow State University, Moscow, Russia
3Department of Nanophotonics, Institute of Problems of Chemical Physics, Chernogolovka, Russia
Email: alga009@mail.ru
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 Kα x-ray flux of 2·107 ph/pulse/2π sr and conversion efficiency of 10-5 were achieved correspondingly. Keywords: femtosecond laser pulses, X-rays.
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