Abstract
By self-consistently calculating x-ray spectra from first principles, we have delineated the relationships between the spectrum and the state of compression and heating of a neon plasma in detail. A collisional-radiative model including Stark line profiles is used to determine the highly ionized high-density states of neon. One of our calculated spectra reproduces remarkably well an experimental spectrum obtained from laser implosion by Yaakobi et al. and indicates compression conditions significantly different from those obtained assuming the validity of local thermodynamic equilibrium. Implications of our calculations for spectroscopic diagnoses of fusion plasmas are discussed.
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