Density measurement of shock compressed foam using two-dimensional x-ray radiography.
We have used spherically bent quartz crystal to image a laser-generated shock in a foam medium. The foam targets had a density of 0.16 g/cm(3) and thickness of 150 microm, an aluminum/copper pusher drove the shock. The experiment was performed at the Titan facility at Lawrence Livermore National Laboratory using a 2 ns, 250 J laser pulse to compress the foam target, and a short pulse (10 ps, 350 J) to generate a bright Ti K alpha x-ray source at 4.5 keV to radiograph the shocked target. The crystal used gives a high resolution (approximately 20 microm) monochromatic image of the shock compressed foam.
Le Pape
Sebastien
S
Lawrence Livermore National Laboratory, 700 East Avenue, Livermore, California 94550, USA.
Macphee
Andrew
A
Hey
Daniel
D
Patel
Pravesh
P
Mackinnon
Andrew
A
Key
Mike
M
Pasley
John
J
Wei
Mingsheng
M
Chen
Sophia
S
Ma
Tammy
T
Beg
Farhat
F
Alexander
N
N
Stephens
Rich
R
Offerman
Dustin
D
Link
A
A
Van-Woerkom
Lynn
L
Freeman
R
R