Speaker
Description
The laser-collision induced fluorescence (LCIF) diagnostic allows quantitative and multidimensional interrogation of electron densities and temperatures. We use this diagnostic to interrogate a cathodic arc expanding in 65 mTorr of Helium. Two-dimensional spatial and time resolved images of electron densities and temperatures within the plasma are shown. Optimization methods were implemented to extract densities up to $10^{16}$ cm$^{-3}$, and results of this procedure are also presented. These images will be used for verification and validation of models and numerical simulations of the plasma expansion.
Sandia National Laboratories is a multimission laboratory managed and operated by National Technology and Engineering Solutions of Sandia LLC, a wholly owned subsidiary of Honeywell International Inc., for the U.S. Department of Energy National Nuclear Security Administration under contract DE-NA0003525.