Cumulative $${\pi}$$ -Mesons in $${}^{{12}}{C}{+}{}^{{9}}$$ Be-Interactions at 3.2 GeV/Nucleon

Physics of Atomic Nuclei - In the FRAGM experiment at the heavy-ion accelerator $$-$$ accumulator complex ITEP $$-$$ TWA, yields of cumulative charged $$\pi$$ mesons have been measured in a...     

Caractéristique directionnelle calculée et mesurée d'une sonde électrochimiqueCalculated and measured directional characteristic of an electrochemical probe

The present paper demonstrates how the directional characteristics of an actual three-segment electrodiffusional sensor can be calculated from the probe image. It was shown that utilization of ‘ideal’ directional characteristics lead to an important (up to 15^°) error in flow angle determination. The directional characteristics calculated from the probe image improve significantly (up to 50%) the accuracy of the flow angle measurements. To cite this article: F. Barbeu et al., C. R. Mecanique 330 (2002) 433–436.     

Diffusion-controlled recombination of peroxide radicals in polyatomic esters

Pulse photolysis measurements of rate constants for the decay of peroxide radicals of seven polyatomic esters show that the reaction is diffusion-controlled for esters with 2 cP. The Smoluchowsky equation is suggested to calculate 2k_t for esters with short alkyl radicals.

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. , - , 2 . 2k_t .

     

Modelling of electrification in steady state and transient regimes

A microscopic model of electrification phenomena in steady state and transient regimes has been developed. The model has been applied for analysis of experimental data failing to be explained in the frame of classical macroscopic approach. Various boundary conditions have been studied regarding the possibility of experiential data fitting. The hybrid boundary condition has been suggested for explaining steady state and transient experiments. The proposed boundary condition can be related to the coexistence of two reactions on the active surface. The first reaction runs under the diffusion control (fast reaction) and the second one is limited by the kinetics (slow reaction).     

Take into account the transfer phenomena and mechanical compression studding an electrochemical system

Journal of Solid State Electrochemistry -     

Nuclear Fragments in the Interactions of Carbon Nuclei with a Beryllium Target at the Energy of 0.95 GeV per Nucleon

The differential cross sections for the yields of nuclear fragments at an angle of 3.5? in the fragmentation of carbon nuclei with energy 0.95 GeV per nucleon on a beryllium target were measured in the FRAGM experiment at the ITEP TWA heavy-ion accelerator. The momentum spectra of fragments were used to test the following four models of ion–ion interactions: BC, INCL++, LAQGSM03.03, and QMD. For light fragments, the slope parameters of the kinetic-energy spectra were obtained in the cumulative region.     

Reactivity of alkylperoxyl radicals in reactions with aromatic nitrons

Interaction of tetradecylperoxyl radicals with two aromatic nitrons has been studied.

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Interaction between peroxyl radicals of polyatomic esters and aromatic nitrons

Reactivity and rate constants in reactions between peroxyl radicals of ethylene glycol diacetate and aromatic nitrons have been investigated.

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