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.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.