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Collective Thomson Scattering Diagnostics of EUV Plasmas

Collective laser Thomson scattering (LTS) has been successfully applied to Z-pinched plasmas produced for extreme ultraviolet (EUV) light sources. Results of measurements gave plasma parameters just after the pinch as the electron density ne=1.5×10 24 m -3 , the electron temperature Te=15 eV, and the averaged ionic charge Z =7. Furthermore, based on measurements of temporal evolutions of ne and Te spatial profiles, the pinched plasma behavior was discussed.