Short-Pulse Laser-Produced Electron Temperature, Divergence and Conversion Efficiency Measurements Using Multiple X-Ray Spectrometers*

The bremsstrahlung radiation emitted from a target irradiated by high-intensity-short-pulse lasers carries information about the electron population. Electron conversion efficiency, temperature, beam divergence and pointing can all be calculated if multiple spectrometers are used. In the experiment described here, five X-ray spectrometers recorded bremsstrahlung radiation from 500 $\mu$m thick silver foils. Modeling of the target to these electrons was performed using Integrated Tiger Series 3.0 (ITS 3.0) code, allowing inference of the electron distribution from the bremsstrahlung emission. These experimental results are compared to the predictions of particle-in-cell (PIC) codes.