Low-Angle Thomson Scattering Experiment for Determination of Plasma Electron Density and Temperature

In this work we show results of measurements of the electron density n_e and temperature T_e by using small-angle Thomson scattering in a theta-pinch plasma. The method of measurement and analysis developed here is based on integration of only two ranges of the scattering profile. This method simplifies the experimental set up, because it needs only two detectors for simultaneous determination of n_e and T_e, instead of the commonly 5–7 detectors used in 90° experiments.The results obtained for low-angle scattering are compared with the measurements at 90° using single pass and multipass under the same plasma conditions.