Initiation of dusty structures in chain reactions under the action of gyrotron radiation on a mixture of metal and dielectric powders with an open boundary


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Abstract

A dusty plasma formed in chain exothermal reactions initiated by radiation of a high-power gyrotron in mixtures of metal and dielectric powders has been described. An oscillatory character of such chain reactions, as well as the appearance of dust particles at the first (explosive) stage, has been detected. The tracks, velocities, and sizes of dust particles have been measured. It has been revealed that ensembles of dust particles appear in a reactor after switching-off of the gyrotron against the background of development of chemical reactions. The time of existence of these ensembles is three or four orders of magnitude larger than the duration of a microwave radiation pulse. The quasistationary state of the low-temperature plasma with charged macroparticles appears because of both the chemical heating of the mixture in the reactor and thermophoresis. It has been shown that dust particles are necessary as crystallization nuclei for the creation (or deposition) of complex composites of nano- and micromaterials produced in secondary plasma chemical synthesis.

About the authors

N. N. Skvortsova

Prokhorov General Physics Institute; Moscow Technological University (MIREA); National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)

Author for correspondence.
Email: nina@fpl.gpi.ru
Russian Federation, Moscow, 119991; Moscow, 119454; Moscow, 115409

G. V. Ukryukov

Moscow Technological University (MIREA)

Email: nina@fpl.gpi.ru
Russian Federation, Moscow, 119454

A. A. Sorokin

Institute of Applied Physics

Email: nina@fpl.gpi.ru
Russian Federation, Nizhny Novgorod, 603950

K. A. Sarksyan

Prokhorov General Physics Institute

Email: nina@fpl.gpi.ru
Russian Federation, Moscow, 119991

D. O. Pozdnyakov

Moscow Technological University (MIREA)

Email: nina@fpl.gpi.ru
Russian Federation, Moscow, 119454

A. E. Petrov

Prokhorov General Physics Institute; Pirogov Russian National Research Medical University

Email: nina@fpl.gpi.ru
Russian Federation, Moscow, 119991; Moscow, 117997

E. A. Obraztsova

Prokhorov General Physics Institute; Moscow Technological University (MIREA)

Email: nina@fpl.gpi.ru
Russian Federation, Moscow, 119991; Moscow, 119454

A. A. Letunov

Prokhorov General Physics Institute

Email: nina@fpl.gpi.ru
Russian Federation, Moscow, 119991

L. V. Kolik

Prokhorov General Physics Institute

Email: nina@fpl.gpi.ru
Russian Federation, Moscow, 119991

E. M. Konchekov

Prokhorov General Physics Institute; Pirogov Russian National Research Medical University

Email: nina@fpl.gpi.ru
Russian Federation, Moscow, 119991; Moscow, 117997

V. D. Borozosekov

Prokhorov General Physics Institute; Pirogov Russian National Research Medical University

Email: nina@fpl.gpi.ru
Russian Federation, Moscow, 119991; Moscow, 117997

G. M. Batanov

Prokhorov General Physics Institute

Email: nina@fpl.gpi.ru
Russian Federation, Moscow, 119991

S. A. Maiorov

Prokhorov General Physics Institute

Email: nina@fpl.gpi.ru
Russian Federation, Moscow, 119991

V. D. Stepakhin

Prokhorov General Physics Institute; Pirogov Russian National Research Medical University

Email: nina@fpl.gpi.ru
Russian Federation, Moscow, 119991; Moscow, 117997

D. V. Malakhov

Prokhorov General Physics Institute; Moscow Technological University (MIREA); Pirogov Russian National Research Medical University

Email: nina@fpl.gpi.ru
Russian Federation, Moscow, 119991; Moscow, 119454; Moscow, 117997

N. K. Kharchev

Prokhorov General Physics Institute

Email: nina@fpl.gpi.ru
Russian Federation, Moscow, 119991

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