Accurate determination of the charge state distribution in a well characterized highly ionized Au plasma

The density, temperature and charge state distribution are accurately determined in a highly ionized non-LTE Au sample. Laser heated Au microdots buried in a thin Be foil, reach temperatures of 2 keV and ionize into the M-shell. During expansion, the tamped Au samples remain uniform and in near stea...

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Published inJournal of quantitative spectroscopy & radiative transfer Vol. 65; no. 1; pp. 231 - 241
Main Authors Foord, M.E, Glenzer, S.H, Thoe, R.S, Wong, K.L, Fournier, K.B, Albritton, J.R, Wilson, B.G, Springer, P.T
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.04.2000
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Summary:The density, temperature and charge state distribution are accurately determined in a highly ionized non-LTE Au sample. Laser heated Au microdots buried in a thin Be foil, reach temperatures of 2 keV and ionize into the M-shell. During expansion, the tamped Au samples remain uniform and in near steady-state ionization equilibrium. The electron temperature is measured with time and space resolved Thomson scattering while the density is determined from time-gated X-ray imaging the expanded Au sample. The charge state distribution is obtained from analysis of emission measurements of Au 5f–3d transition arrays in the wavelength range 3.3–3.9 Å, allowing the average charge to be determined to within ∼1% accuracy.
ISSN:0022-4073
1879-1352
DOI:10.1016/S0022-4073(99)00070-9