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

Aleshkevich V A Aleshkevich V A,Bravy B G Bravy B G,Chaschin M V Chaschin M V,Garmatina A A Garmatina A A,Gordienko V M Gordienko V M,Nazarov M M Nazarov M M,Panchenko V Ya Panchenko V Ya,Shcheglov P A Shcheglov P A

doi:10.21883/eos.2022.04.53728.64-21

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

Aleshkevich V A Aleshkevich V A, Bravy B G Bravy B G + Show 6 more

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https://doi.org/10.21883/eos.2022.04.53728.64-21

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Journal: Optics and Spectroscopy	Publication Date: Jan 1, 2022
Citations: 3

Affiliation: Lomonosov Moscow State University, Kurchatov Institute, Institute of Problems of Chemical Physics

#Local Helium #Femtosecond Laser Pulses + Show 8 more

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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 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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