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Size effect on polarization bremsstrahlung induced by electrons scattered on xenon clusters

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posted on 2023-01-10, 03:26 authored by Yu. S. Doronin, A. A. Tkachenko, V. L. Vakula, G. V. Kamarchuk
We measured spectral distribution of absolute differential cross section of both ordinary and polarization bremsstrahlung for 0.3-1.0 keV electrons scattered on atoms and substrate-free nanoclusters of xenon. Clusters were produced in a supersonic gas jet expanding adiabatically into a vacuum. An original method based on absolute measurements of intensity of the atom and cluster emission in the VUV and USX spectral regions was used to determine the cluster density in the scattering area. The bremsstrahlung arising from scattering on clusters had a polarization component which dominated the differential cross section. For the first time cluster size effect on the formation of the polarization bremsstrahlung was found for xenon.

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