Stimulated Raman scattering and x-ray emission from laser-produced plasmas
Date
1984
Authors
Nugent, Keith Alexander
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Abstract
This thesis describes the results of a study of Stimulated
Raman Scattering (SRS) and the production and diagnosis of high
energy x-ray emission from laser-produced plasmas. It begins with a
description of the diagnostics used to measure the x—ray spectrum
and uses the results from these instruments, along with observations
of scattered light at a frequency close to the laser subharraonic, to
deduce the behaviour of SRS in a plasma produced by 20 psec duration
laser pulses. The x-ray spectrum is further used to infer that the
electron distribution generated via SRS may be non-Maxwellian. It
is also shown that if the superthermal x-ray emission is generated
in the plasma, as opposed to the solid target material, it may be
possible to use the x-ray spectrum to determine the superthermal
electron distribution.
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Thesis (PhD)
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