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Proceedings Paper

Electromagnetic phenomena generated in laser-produced plasmas (Abstract Only)
Author(s): Andrew M. Scott; David C. Jones; David Benton; Susan Clark
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Paper Abstract

When a laser plasma is produced on a target, various electromagnetic phenomena can occur. These can produce substantial currents and voltages in nearby structures. The effects depend on the target material and morphology, the pressure and species of the atmosphere, and the nature of the laser pulse. The following mechanisms are known to make a major contribution to electromagnetic signals detected near laser plasmas: (1) UV plume causing transient high conductivity in semiconductor targets, and ionisation in buffer gasses; (2) Laser plasma generating multi-GHz microwaves due to the generation of plasma waves; (3) Space charge and current charge travelling through vacuum due to differences in the electron and ion velocities; (4) Generation of transient magnetic fields that induce anomalous currents in conductors at the target point, and secondary induced current in nearby conductors. Many of which were first reported in the 1970s, and in this report we review their relative contributions and identify regimes where each dominate.

Paper Details

Date Published: 30 May 2003
PDF: 1 pages
Proc. SPIE 4932, Laser-Induced Damage in Optical Materials: 2002 and 7th International Workshop on Laser Beam and Optics Characterization, (30 May 2003); doi: 10.1117/12.472413
Show Author Affiliations
Andrew M. Scott, QinetiQ (United Kingdom)
David C. Jones, QinetiQ (United Kingdom)
David Benton, QinetiQ (United Kingdom)
Susan Clark, QinetiQ (United Kingdom)

Published in SPIE Proceedings Vol. 4932:
Laser-Induced Damage in Optical Materials: 2002 and 7th International Workshop on Laser Beam and Optics Characterization
Gregory J. Exarhos; Adolf Giesen; Arthur H. Guenther; Norbert Kaiser; Keith L. Lewis; Horst Weber; M. J. Soileau; Christopher J. Stolz, Editor(s)

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