Thomson scattering plasma diagnostics using a four pulse ruby laser

Jones, Plummer Alston

doi:10.1088/0022-3735/7/9/007

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1976

1982

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Thomson Scattering Applied to a Noisy Radiative Plasma

Sijde

Adema

Haas

et al. 1982

Contrib Plasma Phys

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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 Itg from 2.5 lola ma to 1.5 lozo m-3 and an electron temperature Te of about 3 eV. Photon counting techniques have been used. The accuracy of ne and Te to be reached is about 5% after 10 shots. The signal to noise ratio SIN has been optimized by the use of optical filters and a special purpose grating. The effects of these elements on SIN have been calculated. The entrance angle, transmission and quantum efficiency have also been optimized. A comparison between 5 possible h e r systems, including a normal mode and a Qswitched mode ruby laser, has been carried out.

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