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Information × Registration Number 0219U100868, 0113U004472 , R & D reports Title Electronic, photonic and mass-spectrometry of multi-electron atoms and complex molecules at their collisions with electrons popup.stage_title Head Shpenyk Otto B., Кандидат фізико-математичних наук Registration Date 22-03-2019 Organization Institute of Electron Physics, Ukrainian NAS popup.description2  Excitation processes during electron beam interaction with S, Se, and Te vapours in the 0-50 eV range are studied by optical method. The optical spectra (200-600 nm) at low electron energies (5-15 eV) are shown to contain both molecular bands and spectral lines of atoms and single-charged ions. All-round studies of elementary processes of interaction of low-energy electrons with complex molecules (ribose, fructose and xylitol) are carried out, processes of excitation of fructose and D-ribose vapour are investigated by optical spectroscopy. Energy dependences of full cross sections of scattering of electrons by molecules are determined. Energy loss spectra for electron scattering by fructose molecules are obtained by constant scattered electron residual energy method. Features observed in energy dependences of positive ion formation (full effective ionization cross section) for D-ribose, fructose and xylitol molecules (abrupt steepness changes or increase/decrease of the ionization efficiency rate), similarly to the case of chalcogens, provide evidence for the onset of new dissociation channels. Product Description popup.authors popup.nrat_date 2020-04-02 Close