Charge separation and target voltages in laser-produced plasmas

Measurement of the voltages of isolated targets irradiated with 50-psec laser pulses show kilovolt target potentials existing for many nanoseconds. The amplitude of the voltage exceeds what is normally expected for a plasma pressure gradient by roughly an order of magnitude. The voltage amplitude an...

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Bibliographic Details
Published in:Applied physics letters 1977-10, Vol.31 (7), p.414-417
Main Authors: Pearlman, J. S., Dahlbacka, G. H.
Format: Article
Language:English
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Summary:Measurement of the voltages of isolated targets irradiated with 50-psec laser pulses show kilovolt target potentials existing for many nanoseconds. The amplitude of the voltage exceeds what is normally expected for a plasma pressure gradient by roughly an order of magnitude. The voltage amplitude and temporal characteristics are found to be dependent on the vacuum chamber dimensions. A simple one-dimensional plasma model explains the voltage characteristics through the existence of space-charge separation effects and leads to a measurement of the plasma temperature.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.89729