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51.
Yu. A. Belkova Ya. A. Teplova 《Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques》2011,5(2):225-227
Based on the experimental data, the rule of additivity of energy losses in hydrocarbon compounds is shown to be violated at
low ion energies. This indicates the necessity of taking into account the chemical bonds in molecular targets. Deviation from
the additivity rule increases with increasing nuclear charge of incident ions and decreases with increasing ion energy. The
additivity rule is most strongly violated in the molecular targets with double and triple carbon-carbon bonds. 相似文献
52.
Yu. A. Belkova Ya. A. Teplova 《Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques》2014,8(2):201-205
The dependences between the energy losses of beryllium ions penetrating through thin organic (celluloid) films and the initial ion charge i 0 and target thickness t are calculated. The proposed modified method is used to determine the charge fractions and average charge of an ion beam and the half-width and skewness of the charge distributions before the attainment of charge equilibrium. Calculations are performed for Be i+ ions with a velocity of 8 × 108 cm/s (E = 0.33 MeV/nucleon). 相似文献
53.
Belkova NV Gutsul EI Filippov OA Levina VA Valyaev DA Epstein LM Lledos A Shubina ES 《Journal of the American Chemical Society》2006,128(11):3486-3487
The interaction of CpM(CO)3H (M = Mo, W) hydrides as proton donors with different bases (B = pyridine, (n-Oc)3PO, ((CH3)2N)3PO, H3BNEt3) was studied by variable temperature IR spectroscopy and theoretically by DFT/B3LYP calculations. The data obtained show for the first time the formation of intermolecular hydrogen bonds between the neutral transition metal hydrides and bases in solutions of low polarity. These M-H...B hydrogen bonds are shown to precede the hydrides' deprotonation. 相似文献