Spatial profiles of electron density (ne) and electron temperature (Te) of laser-produced Sn plasmas for extreme-ultraviolet (EUV) light sources have been obtained using a new collective Thomson scattering system, which has been optimized for the measurement of the ion feature spectrum. The system has an 18pm spectral resolution, a 5 ns temporal resolution, a 50 μm spatial resolution, and sufficient stray-light rejection near the probing laser wavelength. With this system, measurements of the laser-produced Sn plasmas in the parameter ranges of 3 × 1023 < ne < 1025m-3 and 10 < Te < 20 eV have been performed.
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)