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Information × Registration Number 0219U100865, 0113U004473 , R & D reports Title Dynamics of the processes of the low-energy electron interactions with atomic, ionic and molecular systems popup.stage_title Head Snihurskyi Oleksandr V., Registration Date 22-03-2019 Organization Institute of Electron Physics, Ukrainian NAS popup.description2  Objects of studies: low-energy electron interactions with ions, atoms and molecules. The goal of work is tracing dynamics of electron interactions with above objects, finding thresholds of above reactions, positions and widths of excited autoionizing atomic and negative-ion states, studying structural features of above processes, finding basic mechanisms of interactions, channels of production and decay of autoionizing/resonance states, spectroscopic classification of excited states, main characteristics and parameters of excited and ionized atoms/ions, dielectronic recombination and ionization, dissociation of complex atomic systems. The methods of electron, optical and mass spectroscopy were used. Results obtained: energy dependences of excitation and dielectronic recombination cross sections for Ga+ and Pb+, role of configuration interaction in excitation and electron-ion recombination. The role of subvalence shells in electron interactions with many-electron ions was investigated. The influence of resonance processes on excitation of subvalence shell in Sr and Ba was studied. Mass-spectra of tryptophan and proline were measured, role of thermal degradation of molecules at fragmentation was clarified, basic mechanisms of fragmentation were found. Single and dissociative ionization functions for proline and tryptophan were measured, ionization energies and appearance potentials for ionized fragments were found. Excitation functions and UV/VUV-spectra of glycine and methionine were obtained. New atomic/molecular constants obtained may find application when solving problems related to plasma physics, stimulating theoretical approaches and methods, clarifying data on resonance phenomena related to negative ion production and decay. The data on mechanisms of above processes could be used in solving applied tasks of plasma chemistry and physics, astrophysics and quantum electronics, environmental monitoring, in medicine and pharmacology. Product Description popup.authors popup.nrat_date 2020-04-02 Close