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Thomson scattering is the scattering of photons by free electrons in an ionized gas. Since the number density of scattered photons and their spectral distribution is directly related to important plasma properties such as ne and Te, it is one of the most prominent techniques in plasma diagnostics.
Thompson Scattering can be used to non-invasively determine key plasma characteristics (taking a Surfatron plasma as an example) such as electron density and temperature.
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