Formation of extended conducting channels in atmosphere

Some mechanisms of the formation of an extended ({approx}1 km) conducting channel in atmosphere using the laser engine technology (Impul'sar program) are considered. The electric conductivity of a channel formed by electric explosion of a 90-{mu}m copper wire up to {approx}1.6 m long (in electr...

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Bibliographic Details
Published in:Quantum electronics (Woodbury, N.Y.) N.Y.), 2012-02, Vol.42 (2), p.130-139
Main Authors: Apollonov, V V, Pletnev, N V
Format: Article
Language:English
Subjects:
AEROSOLS
ATMOSPHERES
BREAKDOWN
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
COPPER
COPPER OXIDES
ELECTRIC CONDUCTIVITY
EXPLOSIONS
LASER RADIATION
PLASMA
SOLID STATE LASERS
SURFACES
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Summary:Some mechanisms of the formation of an extended ({approx}1 km) conducting channel in atmosphere using the laser engine technology (Impul'sar program) are considered. The electric conductivity of a channel formed by electric explosion of a 90-{mu}m copper wire up to {approx}1.6 m long (in electric breakdown) at a voltage not higher than 10 kV is studied. The requirements to the products of laser engine exhaust to atmosphere for producing a conducting channel, containing dispersion and condensation aerosols of hot particles of copper oxides (CuO, Cu{sub 2}O) and copper with an oxidised surface (from 50 nm to 300 {mu}m in diameter), are formulated. Possible mechanisms of electric breakdown at the field strength E {>=} 52 V cm{sup -1} in the discharge gap are discussed. The electric conductivity of the channel formed by the laser plasma upon focusing the solid-state laser radiation on targets made of different materials has also been studied.
ISSN:1063-7818
1468-4799
DOI:10.1070/QE2012v042n02ABEH014762