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Proceedings Paper

Dedicated contamination experiments in the Orion laser target chamber
Author(s): J. Andrew; J.-M. Chevalier; D. Egan; A. Geille; J.-P. Jadaud; J.-H. Quessada; D. Raffestin; M. Rubery; P. Treadwell; L. Videau
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Paper Abstract

The use of solid targets irradiated in a vacuum target chamber by focussed high energy, high power laser beams to study the properties of matter at high densities, pressures and temperatures are well known. An undesirable side effect of these interactions is the generation of plumes of solid, liquid and gaseous matter which move away from the target and coat or physically damage surfaces within the target chamber. The largest aperture surfaces in these chambers are usually the large, high specification optical components used to produce the extreme conditions being studied [e.g. large aperture off axis parabolas, aspheric lenses, X ray optics and planar debris shields]. In order to study these plumes and the effects that they produce a set of dedicated experiments were performed to evaluate target by product coating distributions and particle velocities by a combined diagnostic instrument that utilised metal witness plates, polymer witness plates, fibre velocimetry and low density foam particle catchers.

Paper Details

Date Published: 23 November 2015
PDF: 11 pages
Proc. SPIE 9632, Laser-Induced Damage in Optical Materials: 2015, 96320E (23 November 2015); doi: 10.1117/12.2194446
Show Author Affiliations
J. Andrew, AWE plc (United Kingdom)
J.-M. Chevalier, CEA CESTA (France)
D. Egan, AWE plc (United Kingdom)
A. Geille, CEA CESTA (France)
J.-P. Jadaud, CEA (France)
J.-H. Quessada, CEA CESTA (France)
D. Raffestin, CEA CESTA (France)
M. Rubery, AWE plc (United Kingdom)
P. Treadwell, AWE plc (United Kingdom)
L. Videau, CEA (France)

Published in SPIE Proceedings Vol. 9632:
Laser-Induced Damage in Optical Materials: 2015
Gregory J. Exarhos; Vitaly E. Gruzdev; Joseph A. Menapace; Detlev Ristau; MJ Soileau, Editor(s)

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