Blast wave energy diagnostic.
The distance radiation waves that supersonically propagate in optically thick, diffusive media are energy sensitive. A blast wave can form in a material when the initially diffusive, supersonic radiation wave becomes transonic. Under specific conditions, the blast wave is visible with radiography as a density perturbation. [Peterson et al., Phys. Plasmas 13, 056901 (2006)] showed that the time-integrated drive energy can be measured using blast wave positions with uncertainties less than 10% at the Z Facility. In some cases, direct measurements of energy loss through diagnostic holes are not possible with bolometric and x-ray radiometric diagnostics. Thus, radiography of high compression blast waves can serve as a complementary technique that provides time-integrated energy loss through apertures. In this paper, we use blast waves to characterize the energy emerging through a 2.4 mm aperture and show experimental results in comparison to simulations.
Tierney
Thomas E
TE
Los Alamos National Laboratory, P.O. Box 1663, Los Alamos, New Mexico 87545, USA.
Tierney
Heidi E
HE
Idzorek
George C
GC
Watt
Robert G
RG
Peterson
Robert R
RR
Peterson
Darrell L
DL
Fryer
Christopher L
CL
Lopez
Mike R
MR
Jones
Michael C
MC
Sinars
Daniel
D
Rochau
Gregory A
GA
Bailey
James E
JE