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JOURNALS // Teplofizika vysokikh temperatur // Archive

TVT, 2011 Volume 49, Issue 3, Pages 357–364 (Mi tvt402)

This article is cited in 4 papers

Plasma Investigations

Investigation of the Kinetics of Carbon Nanoparticle Charging in Shock-Heated Plasma ú

S. Ya. Bronin, A. V. Emelianov, A. V. Eremin, A. G. Khrapak

Joint Institute for High Temperatures, Russian Academy of Sciences, Moscow

Abstract: The experimental results and a computer simulation of charging of carbon nanoparticles formed in the process of pyrolysis of the carbon suboxide $\mathrm{C}_3$$\mathrm{O}_2$ behind shock waves are presented. It is shown that the time necessary for the onset of an equilibrium distribution of charges in the gas–nanoparticle system at pressures of $15$--$30$~bar decreases from $400$ to $40$~s with a temperature rise from $2000$ to $3600$ K. The equilibrium concentration of free electrons in the presence of nanoparticles in the mixture is much lower than that in the same gas without particles. Step ionization of sodium and a subsequent recombination of free electrons and sodium ions on the nanoparticle surface are considered in order to analyze the kinetics of nanoparticle charging.

UDC: 533.922; 544.427

Received: 17.11.2009


 English version:
High Temperature, 2011, 49:3, 349–355

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