Zobrazeno 1 - 10
of 264
pro vyhledávání: '"O B Shpenik"'
Publikováno v:
Technical Physics Letters. 47:889-892
Publikováno v:
Instruments and Experimental Techniques. 64:401-407
In an electron energy analyzer, a “spiratron,” whose dispersing element is a coaxial cylindrical capacitor, analyzed electrons are introduced into the capacitor at an angle of 45° to the axis of the cylinders and move under the action of a defle
Publikováno v:
Technical Physics Letters. 46:815-818
The excitation of glutamine molecules in the gas phase by collisions with low-energy (1–100 eV) electrons has been studied by optical spectroscopy techniques. The emission spectra of excited molecules were measured in a wavelength interval of 250
Publikováno v:
International Journal of Mass Spectrometry. 441:1-7
The results of mass spectra of d -ribose molecular beam study by electron impact for the 20–70 eV energy range at the evaporation temperature 310–430 K are presented. The experiment was carried out in two stages: first the mass spectra were measu
Publikováno v:
Technical Physics. 64:8-13
The technique and results of a mass spectrometric study on the yield of positive ions formed upon ionization of xylitol molecules by electron impact are discussed. The mass spectra of xylitol are studied in the range of mass numbers of 10–160 Da an
Publikováno v:
Optics and Spectroscopy. 125:845-852
Using a hypocycloidal electron spectrometer, the total scattering cross section of slow (0–9 eV) electrons and the dissociative electron attachment cross section for thymine molecules in the gas phase were measured. The ionization cross section for
Publikováno v:
Technical Physics Letters. 44:358-361
We describe a method and presents results of a mass-spectrometric investigation of the yield of positive ions formed as a result of the direct and dissociative ionization of xylitol molecules by electron impact. The mass spectra of xylitol in a range
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 54:145201
Publikováno v:
Technical Physics. 62:359-364
The methodology and results of mass-spectrometric studies of producing positive ions as a result of the dissociative ionization of a molecular selenium beam by electron impact are discussed. The appearance energies of fragment ions were determined fr
Publikováno v:
The European Physical Journal D. 73
The method and results of the study of positive ions yield in the mass-spectrometric investigations by electron impact ionization of molecules of guanine, adenine and thymine are described. Mass spectrum obtained by electron impact has been measured