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Experimental results are reported of investigations of the optical properties of the plasma produced when an AI2O3 target is irradiated in vacuum by a high-power neodymiunr-glass laser system. It is shown that a number of 0 VIII and 0 VII ion levels with principal quantum numbers n = 2, 3, 4 are inversely populated. The gain at the wavelength 29 nm (4 3 transition, O VIII) under the experimental conditions is of the order of 0.01 cm-1. For the heliumlike ions O VII, in a transition with the same principal quantum numbers (ls4p1P1 ls3s1S0, 36.9 nm), the gain is of the order of 10-2–10-1 cm-1, depending on the electron density.Translated from Lazernye Sistemy, pp. 5–14 1982. 相似文献
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Wijkens P Jastrzebski JT van Der Schaaf PA Kolly R Hafner A van Koten G 《Organic letters》2000,2(11):1621-1624
A general method for the functionalization of Si-Cl terminated carbosilane dendritic molecules via organolithium or organomagnesium reagents is described. Quantitative exchange of the bromine atoms of 4-bromophenyl-functionalized dendrimers affords polylithiated species that are valuable starting materials for further functionalization, e.g., into pyridyl alcohols. The latter were successfully applied as catalyst precursors in a ruthenium-mediated ring-closure metathesis reaction. 相似文献
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Mayuribala Mangrulkar Sergey Yu. Luchkin Aleksandra G. Boldyreva Pavel A. Troshin Keith J. Stevenson 《Mendeleev Communications》2021,31(3):319-322
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A. A. Borisov K. Ya. Troshin V. N. Mikhalkin 《Russian Journal of Physical Chemistry B, Focus on Physics》2016,10(5):780-784
The ignition delay times for mixtures of isopropyl nitrate (IPN) with air and argon are measured in a rapid-injection reactor at a pressure of 1 atm and in a shock tube at 2–3 atm. It is shown that the ignition delay time τ of mixtures in which heat is largely released due to oxidation by the oxygen contained in the IPN molecule is determined by the unimolecular decomposition of IPN over the entire temperature range covered (500–730 K). For mixtures in which heat is mainly produced by oxidation reactions involving air oxygen, the ignition delay time at high temperatures is controlled by secondary reactions of oxidation of the hydrocarbon moiety of the IPN molecule, leading to an increase in τ by more than an order of magnitude. Liquid IPN burns in a nitrogen atmosphere only at pressures above 40 atm, at a linear rate of ~4 mm/s. The measured flame temperatures are in close agreement with the respective values calculated using a thermodynamic code. 相似文献
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The relativistic scattering was one of the scientific fields where Academician V.G. Kadyshevsky has made an important and highly cited contribution [1]. In this paper we discuss the high-energy dependencies of diffractive and non-diffractive inelastic cross-sections in view of the recent LHC data which reveal a presence of the reflective scattering mode. 相似文献
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Kotelnikova R. A. Smolina A. V. Zhilenkov A. V. Soldatova Yu. V. Faingold I. I. Troshin P. A. Kotelnikov A. I. 《Russian Chemical Bulletin》2018,67(2):366-370
Russian Chemical Bulletin - Regularities of interaction of water-soluble pentaamino acid derivatives of fullerenes (WPDFs) with the lipid bilayer of phosphatidylcholine liposomes were studied using... 相似文献