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Proceedings Paper

Contamination, debris, and shrapnel generation arising from large area laser target interactions
Author(s): J. E. Andrew; R. H. Burrell; C. W. Jones; A. E. Leatherland; A. D. Sibley
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Paper Abstract

Typically, plasma physics targets are of millimeter or sub millimeter dimensions and use an irradiance of ~1016 W/cm2 in nanosecond [“long”] pulses or ~1021 W/cm2 for “short” [~500fs] pulse lengths. These conditions lead to target and target mount materials being raised to temperatures that cause changes from the solid state into liquid, gaseous and plasma conditions. Matter from the altered states are then subsequently ejected from the originally solid target location and are distributed in space with a variety of masses and velocities and form layers or regions of contamination, some of which may be deposited on sensitive laser or X ray optical surfaces. If low energy densities are used then there is insufficient energy to change the state of the target and a plume of solid fragments is emitted by the target.

Paper Details

Date Published: 13 November 2017
PDF: 12 pages
Proc. SPIE 10447, Laser-Induced Damage in Optical Materials 2017, 1044703 (13 November 2017); doi: 10.1117/12.2279888
Show Author Affiliations
J. E. Andrew, AWE plc (United Kingdom)
R. H. Burrell, AWE plc (United Kingdom)
C. W. Jones, AWE plc (United Kingdom)
A. E. Leatherland, AWE plc (United Kingdom)
A. D. Sibley, AWE plc (United Kingdom)

Published in SPIE Proceedings Vol. 10447:
Laser-Induced Damage in Optical Materials 2017
Gregory J. Exarhos; Vitaly E. Gruzdev; Joseph A. Menapace; Detlev Ristau; MJ Soileau, Editor(s)

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