Bulletin of the American Physical Society
22nd Biennial Conference of the APS Topical Group on Shock Compression of Condensed Matter
Volume 67, Number 8
Monday–Friday, July 11–15, 2022; Anaheim, California
Session I02: Spall Nucleation I
9:15 AM–10:45 AM,
Tuesday, July 12, 2022
Anaheim Marriott
Room: Platinum 6
Chair: George Gray, Los Alamos Natl Lab
Abstract: I02.00005 : Micro-spall investigation in Sn targets using velocity and multi-time X-ray diagnostics in plate impact experiments
10:15 AM–10:30 AM
Presenter:
Laurianne Pillon
(CEA de Bruyeres-le-Chatel)
Authors:
Laurianne Pillon
(CEA de Bruyeres-le-Chatel)
Camille Chauvin
(CEA Gramat)
Yulrick Philippe
(CEA de Bruyeres-le-Chatel)
Julien Tailleur
(CEA de Bruyeres-le-Chatel)
Pascal Hereil
(CEA Gramat)
Five plate impact experiments have been performed on a powder gun. Classical diagnostics dedicated to the velocity measurements have been coupled to an original set up allowing a multi-time X-ray observation of the cloud. This experimental results give us quantitative information to evaluate the relevance of microspall modeling.
Velocity measurements and muti-time density distribution are in good agreement with simulations performed with an hydrodynamic code. Different modelling for microspall have been investigated. These informative observations allow us to significantly improve our understanding of the physics of microspall.
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