TITLE

Soft recovery technique to investigate dynamic fragmentation of laser shock-loaded metals

AUTHOR(S)
Lescoute, E.; De Rességuier, T.; Chevalier, J.-M.; Boustie, M.; Cuq-Lelandais, J.-P.; Berthe, L.
PUB. DATE
November 2009
SOURCE
Applied Physics Letters;11/23/2009, Vol. 95 Issue 21, p211905
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
With the development of high energy laser facilities dedicated to inertial confinement fusion, the question of debris ejection from metallic shells subjected to intense laser irradiation has become a key issue. We have used two diagnostics to investigate fragmentation processes. Recovery of ejected fragments has been performed in a highly transparent gel of density 0.9 g/cm3. Fragments sizes, shapes, and penetration depths, can be easily observed with a spatial resolution of micrometer-order. Complementary data are provided by transverse shadowgraphy which allows to obtain quasi-instantaneous, successive pictures of the debris clouds and mean ejection velocities.
ACCESSION #
45478102

 

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