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Observations of continuum depression in warm dense matter with X-ray thomson scattering
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Fletcher, L. B., Kritcher, A. L., Pak, A., Ma, T., Döppner, T., Fortmann, C., Divol, L., Jones, O. S., Landen, O. L., Scott, H. A., Vorberger, Jan, Chapman, D. A., Gericke, Dirk O., Mattern, B. A., Seidler, G. T., Gregori, Gianluca, Falcone, R. W. and Glenzer, S. H. (2014) Observations of continuum depression in warm dense matter with X-ray thomson scattering. Physical Review Letters, Volume 112 (Number 14). 145004 . doi:10.1103/PhysRevLett.112.145004 ISSN 0031-9007.
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Official URL: http://dx.doi.org/10.1103/PhysRevLett.112.145004
Abstract
Detailed measurements of the electron densities, temperatures, and ionization states of compressed CH shells approaching pressures of 50 Mbar are achieved with spectrally resolved x-ray scattering. Laser-produced 9 keV x-rays probe the plasma during the transient state of three-shock coalescence. High signal-to-noise x-ray scattering spectra show direct evidence of continuum depression in highly degenerate warm dense matter states with electron densities ne>1024cm-3. The measured densities and temperatures agree well with radiation-hydrodynamic modeling when accounting for continuum lowering in calculations that employ detailed configuration accounting.
Item Type: | Journal Article | ||||||
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||
Journal or Publication Title: | Physical Review Letters | ||||||
Publisher: | American Physical Society | ||||||
ISSN: | 0031-9007 | ||||||
Official Date: | 10 April 2014 | ||||||
Dates: |
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Volume: | Volume 112 | ||||||
Number: | Number 14 | ||||||
Article Number: | 145004 | ||||||
DOI: | 10.1103/PhysRevLett.112.145004 | ||||||
Status: | Peer Reviewed | ||||||
Publication Status: | Published | ||||||
Access rights to Published version: | Restricted or Subscription Access |
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