title: Direct observation of feedout-related mass oscillations in plastic targets.
abstract: "Feedout" means the transfer of mass perturbations from the rear to the front surface of a driven target. When a planar shock wave breaks out at a rippled rear surface of the target, a lateral pressure gradient drives sonic waves in a rippled rarefaction wave propagating back to the front surface. This process redistributes mass in the volume of the target, forming the feedout-generated seed for ablative Rayleigh-Taylor (RT) instability. We report the first direct experimental observation of areal-mass oscillation associated with feedout, followed by the onset of exponential RT growth.
authors.affiliation: Science Applications International Corporation, McLean, Virginia 22150, USA.
authors.forename: Y
authors.initials: Y
authors.lastname: Aglitskiy
authors.forename: A L
authors.initials: AL
authors.lastname: Velikovich
authors.forename: M
authors.initials: M
authors.lastname: Karasik
authors.forename: V
authors.initials: V
authors.lastname: Serlin
authors.forename: C J
authors.initials: CJ
authors.lastname: Pawley
authors.forename: A J
authors.initials: AJ
authors.lastname: Schmitt
authors.forename: S P
authors.initials: SP
authors.lastname: Obenschain
authors.forename: A N
authors.initials: AN
authors.lastname: Mostovych
authors.forename: J H
authors.initials: JH
authors.lastname: Gardner
authors.forename: N
authors.initials: N
authors.lastname: Metzler