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Progress in Plasma Processing of Materials, 1997

ISBN:
1-56700-093-2 (Print)

FORMATION OF ORDERED STRUCTURE IN SPRAY OF THERMAL DUSTY PLASMAS

Vladimir Evgenievich Fortov
Joint Institute of High Temperatures RAS, Russian Academy of Science, Moscow, Russia

Anatoli P. Nefedov
Institute for High Energy Densities, Russian Academy of Sciences, IVTAN, Izhorskaya, 13/19, Moscow, 127412, Russia

Oleg F. Petrov
Joint Institute of High Temperatures RAS, Russian Academy of Science, Moscow, Russia

Alex A. Samarian
High Energy Density Research Center, Russian Academy of Sciences, Izhorskaya 13/19, 127412, Moscow, Russia

Alex V. Chernyschev
High Energy Density Research Center, Russian Academy of Sciences, Izhorskaya 13/19, 127412, Moscow, Russia

Andrey M. Lipaev
High Energy Density Research Center, Russian Academy of Sciences, Izhorskaya 13/19, 127412, Moscow, Russia

Abstract

An ordered structure of macroscopic particles has been experimentally observed in a classical neutral thermal plasma using a laser time-of-flight system. The strongly coupled thermal plasma consists of Ce02 particles and electrons emitted by the latter under atmospheric pressure and temperature of 1700 K. The particles are charged positively and suspended in a plasma flow. Their charge is about 103e and the calculated value of a Coulomb coupling parameter γp is >120 that corresponds to a strongly coupled plasma.