Spectrally Resolved Intensities of Ultra-Dense Hot Aluminum Plasmas

We present a first study of spectroscopic determination of electron temperature and density spatial profiles of aluminum K‐shell line emission spectra from laser‐shocked aluminum experiments performed at LULI. The radiation emitted by the aluminum plasma was dispersed with an ultra‐high resolution spectrograph (λ/Δλ≈6000). From the recorded films one can extract a set of time‐integrated emission lineouts associated with the corresponding spatial region of the plasma. The observed spectra include the Lyα, Heβ, Heγ, Lyβ and Lyγ line emissions and their associated He‐ and Li‐like satellites thus covering a photon energy range from 1700 eV to 2400 eV approximately. The data analysis rely on the ABAKO/RAPCAL computational package, which has been recently developed at the University of Las Palmas de Gran Canaria and takes into account non‐equilibrium collisional‐radiative atomic kinetics, Stark broadened line shapes and radiation transport calculations.