AI Article Synopsis
- The study focuses on measuring the ionization balance of gold plasmas under different conditions of electron density and temperature.
- Researchers utilized a detailed model to analyze gold emission spectra, revealing average ion charges ranging from 42 to 50.
- Findings show that lower temperatures lead to a strong response to external radiation, providing a crucial test for models of high Z ions in non-local thermodynamic equilibrium.
Article Abstract
We present a series of benchmark measurements of the ionization balance of well-characterized gold plasmas with and without external radiation fields at electron densities near 10{21} cm{-3} and electron temperatures spanning the range 0.8 to 2.4 keV. We have analyzed time- and space-resolved M-shell gold emission spectra using a sophisticated collisional-radiative model with hybrid level structure, finding average ion charges Z ranging from 42 to 50. At the lower temperatures, the spectra exhibit significant sensitivity to external radiation fields and include emission features from complex N-shell ions. The measured spectra and inferred Z provide a stringent test for non-local-thermodynamic-equilibrium models of complex high-Z ions.
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| http://dx.doi.org/10.1103/PhysRevLett.99.195001 | DOI Listing |
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