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Thomson Scattering Applied to a Noisy Radiative Plasma
Author(s) -
van Der Sijde B.,
Adema S.,
De Haas J.,
Denissen C. J. M.,
van De Sande M. J. F.
Publication year - 1982
Publication title -
beiträge aus der plasmaphysik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.531
H-Index - 47
eISSN - 1521-3986
pISSN - 0005-8025
DOI - 10.1002/ctpp.19820220405
Subject(s) - thomson scattering , radiative transfer , laser , optics , plasma , physics , atomic physics , ruby laser , scattering , electron , photon , electron temperature , noise (video) , nuclear physics , artificial intelligence , computer science , image (mathematics)
Thomson scattering with a 1.5 ms long pulse mode 20 J ruby laser has been applied to a radiative argon plasma with electron densities n e from 2.5 10 19 m −3 to 1.5 10 20 m −3 and an electron temperature T e of about 3 eV. Photon counting techniques have been used. The accuracy of n e and T e to be reached is about 5% after 10 shots. The signal to noise ratio S/N has been optimized by the use of optical filters and a special purpose grating. The effects of these elements on S/N have been calculated. The entrance angle, transmission and quantum efficiency have also been optimized. A comparison between 5 possible laser systems, including a normal mode and a Q‐switched mode ruby laser, has been carried out.