From: bds@rzg.mpg.de (Bruce Scott TOK)
Newsgroups: sci.physics.plasma
Subject: Re: infrared
Organization: Rechenzentrum der Max-Planck-Gesellschaft in Garching
References: <93ckvv$6flb$1@saturn.cs.uml.edu> <93pqvp$42pp$1@saturn.cs.uml.edu>



In article <93pqvp$42pp$1@saturn.cs.uml.edu>,
Greger0815 <greger0815@aol.comnojunk> wrote:
>
>
>why infrared??

Sharp laser lines are produced which are good for scattering diagnostics
(photons off free electrons). This (Thompson scattering) is the typical
way to measure the electron temperature and in some applications the
density (though absolute calibration can be difficult, the relative
measurements are useful for fluctuation studies). Far infrared
scattering has been useful for studies of turbulence when no other
methods are available (the plasma is too hot for probes).

--
cu,
Bruce

drift wave turbulence: http://www.rzg.mpg.de/~bds/