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Proceedings Paper

Probe investigations of close-to-surface plasma, produced by CO2 laser nanosecond pulse train
Author(s): Vladimir R. Sorochenko; Victor V. Apollonov; Vitali I. Konov; Petr I. Nikitin; Alexander M. Prokhorov; Yu. A. Shakir
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Paper Abstract

Investigations of currents in close-to surface plasma, produced by CO2- laser radiation of different temporal structure have been carried out. The character of evolution of registered currents temporal structure at growing energy density was different when the target was irradiated in air and in vacuum by the train of short (τ= 2.5 ns ) pulses. Experiments in vacuum have revealed that the transit from smooth single mode pulse to the nanosecond pulse train of the same total energy was followed by a considerable decrease in plasma formation energy thresholds and by the increase of amplitudes of currents induced by plasma. The current pulses from the target were registered after finishing the laser irradiation; their appearance was probably connected with cumulation effects, caused by the ring form of the irradiated area.

Paper Details

Date Published: 1 June 1990
PDF: 8 pages
Proc. SPIE 1225, High-Power Gas Lasers, (1 June 1990); doi: 10.1117/12.18511
Show Author Affiliations
Vladimir R. Sorochenko, General Physics Institute (Russia)
Victor V. Apollonov, General Physics Institute (Russia)
Vitali I. Konov, General Physics Institute (Russia)
Petr I. Nikitin, General Physics Institute (Russia)
Alexander M. Prokhorov, General Physics Institute (Russia)
Yu. A. Shakir, General Physics Institute (Russia)

Published in SPIE Proceedings Vol. 1225:
High-Power Gas Lasers
Petras V. Avizonis; Charles Freed; Jin J. Kim; Frank K. Tittel, Editor(s)

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