Record Details

Title:
Measurements of the $K$-Shell Opacity of a Solid-Density Magnesium Plasma Heated by an X-Ray Free-Electron Laser
Affiliation(s):
EuXFEL staff, Other
Author group:
Instrument HED
Topic:
Scientific area:
Abstract:
We present measurements of the spectrally resolved x rays emitted from solid-density magnesium targets of varying sub-${\mu}\mathrm{m}$ thicknesses isochorically heated by an x-ray laser. The data exhibit a largely thickness-independent source function, allowing the extraction of a measure of the opacity to $K$-shell x rays within well-defined regimes of electron density and temperature, extremely close to local thermodynamic equilibrium conditions. The deduced opacities at the peak of the $K{\alpha}$ transitions of the ions are consistent with those predicted by detailed atomic-kinetics calculations.
Imprint:
2017
Journal Information:
Physical Review Letters, 119, 085001 (2017)
Related external records:
Language(s):
English
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