https://doi.org/10.1140/epjd/s10053-022-00499-z
Regular Article - Ultraintense and Ultrashort Laser Fields
Study of 
X-ray flux angular distribution in Cu and KBr targets
1
Department of Nuclear Research, Center for Physical Sciences and Technology, Savanoriu ave. 231, 02300, Vilnius, Lithuania
2
Faculty of Physics, Vilnius University, Sauletekio ave. 9, III Bldg, 10222, Vilnius, Lithuania
Received:
8
July
2022
Accepted:
8
September
2022
Published online:
24
September
2022
Due to a wide band-gap, the alkali metal halide salts (KBr, NaBr, KI, NaI and CsI) are transparent to infrared femtosecond laser pulses and allow generation of X-ray inside the sample rather than on its surface. In this study, the emission of X-ray was experimentally investigated in the KBr target. The KBr salt targets were prepared using pellet method. We compared the X-ray emission in KBr and metallic Cu targets. The angular distribution of the X-ray flux was investigated using experimental measurements and numerical Monte Carlo modeling. The mean depth of the X-ray source in the alkali halide targets was found to be 5 
m.
Anton koroliov, Jonas Reklaitis, Vytenis Barkauskas, Karolina Varsockaja, Darius Germanas, Arturas Plukis, Vidmantas Remeikis–authors contributed equally to this work.
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