A spectroscopic analysis of near solid density plasmas
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Published:1999-07
Issue:3
Volume:17
Page:477-485
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ISSN:0263-0346
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Container-title:Laser and Particle Beams
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language:en
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Short-container-title:Laser Part. Beams
Author:
SMITH R.,TALLENTS G.J.,PESTEHE S.J.,HIRST G.,LIN J.,ROSE S.,TAGVIASHVILI M.
Abstract
Targets of thin (0.1 μm) Al buried beneath
0.1 μm plastic overlay have been irradiated by the
350 fs CPA pulse from the 248 nm Titania KrF laser at irradiances
of 1017 W/cm2. We report a study
of the radiative properties of the Al plasma using X-ray
emission spectroscopy. It is demonstrated that short-pulse
irradiation of buried-layer targets can produce a plasma
with close to solid densities and electron temperatures
of several hundred eV. We examine the effect that a long
duration (5–50 ns) low intensity (∼5 ×
108 W/cm2) prepulse has on the measured
values of electron density and temperature. The experimental
technique will allow the determination of the accuracy
of LTE radiative calculations in this new regime of extremely
high material energy density.
Publisher
Hindawi Limited
Subject
Electrical and Electronic Engineering,Condensed Matter Physics,Atomic and Molecular Physics, and Optics