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| Copyright: University of York |
Ein Abstract zum Programm des Workshops finden Sie unten.
Anmeldungen nimmt SFB-Sekretärin Anja Mersdorf (mersdorf@aept.rub.de) bis zum 25.1. entgegen.
Plasma Characterization and
classification using the method of
disturbed Bilateral Relations.
Joost
van der Mullen
The aim
of this lecture-block is to provide a common basis for engineers, experimentalists,
theoreticians and users of plasma sources. This will be done by presenting a plasma
classification/characterization tool based on the many aspects of equilibrium
departures in plasmas. This leitmotiv is chosen because non-equilibrium is the
essential reason behind the success of high-tech plasmas physics. Plasmas can generate large fluxes of
photons and radicals but these effluxes will create deviations from the equilibrium.
To find our way in the wilderness of plasma
features and sources we will use the method of disturbed Bilateral Relations (dBR), which relates equilibrium disturbing
to equilibrium restoring mechanisms. In that way it generates
validity-criteria and predicts trends in the deviations from equilibrium. The
basic idea of the dBR method is that “equilibrium” has many features, which can
be described by specifying the underlying balances of (de)excitation
ionization/recombination, absorption/emission etc.. Equilibrium-departure has
also many aspects. This can be caused by the efflux of heat, photons
and/or (charged) particles.
Several different types of plasmas will be
dealt with in various case studies. The tight relation between the (simplified)
theory and spectroscopy will be highlighted. Apart from passive spectroscopy
(Optical Emission Spectroscopy) we will also give examples of active (laser)
spectroscopy like Thomson scattering.
The
use of complicated formulas is avoided; the number of equations will be
limited.
