Opacity measurements of a hot iron plasma using an x-ray laser.
The temporal evolution of the opacity of an iron plasma at high temperature (30-350 eV) and high density (0.001-0.2 g cm-3) has been measured using a nickel-like silver x-ray laser at 13.9 nm. The hot dense iron plasma was created in a thin (50 nm) iron layer buried 80 nm below the surface in a plastic target that was heated using a separate 80 ps pulse of 6-9 J, focused to a 100 microm diameter spot. The experimental opacities are compared with opacities evaluated from plasma conditions predicted using a fluid and atomic physics code.
Edwards
M H
MH
Department of Physics, University of York, York YO10 5DD, United Kingdom.
Whittaker
D
D
Mistry
P
P
Booth
N
N
Pert
G J
GJ
Tallents
G J
GJ
Rus
B
B
Mocek
T
T
Koslová
M
M
McKenna
C
C
Delserieys
A
A
Lewis
C L S
CL
Notley
M
M
Neely
D
D