title: Blast wave energy diagnostic.
abstract: 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.
authors.affiliation: Los Alamos National Laboratory, P.O. Box 1663, Los Alamos, New Mexico 87545, USA.
authors.forename: Thomas E
authors.initials: TE
authors.lastname: Tierney
authors.forename: Heidi E
authors.initials: HE
authors.lastname: Tierney
authors.forename: George C
authors.initials: GC
authors.lastname: Idzorek
authors.forename: Robert G
authors.initials: RG
authors.lastname: Watt
authors.forename: Robert R
authors.initials: RR
authors.lastname: Peterson
authors.forename: Darrell L
authors.initials: DL
authors.lastname: Peterson
authors.forename: Christopher L
authors.initials: CL
authors.lastname: Fryer
authors.forename: Mike R
authors.initials: MR
authors.lastname: Lopez
authors.forename: Michael C
authors.initials: MC
authors.lastname: Jones
authors.forename: Daniel
authors.initials: D
authors.lastname: Sinars
authors.forename: Gregory A
authors.initials: GA
authors.lastname: Rochau
authors.forename: James E
authors.initials: JE
authors.lastname: Bailey