Shock-driven material can emit a fine spray of ejecta from its free surface. Understanding the dynamic and interaction of the metal ejecta is important to areas of study as diverse as industrial safety, astrophysics, spacecraft shielding, additive manufactur- ing and inertial confinement fusion. In this work we present results from hydrodynamic simulation studies in support of designing experiments on the OMEGA and OMEGA-EP laser platforms. The initial experimental campaign was focused on developing a platform aimed at launching hypervelocity particles. We have used a finite element formulation with ALE3D (Arbitrary Lagragian Eulerian) code in support of this campaign. Fields like pressure and velocity of elements produced in the ablated part of material are computed using the FLASH radiation-hydrodynamic code. These are then used as input in a “handshaking” region ALE code to capture shock propagation and the dynamics of the particles. As the campaign has shifted towards producing the ejecta and studying its interaction we have also undertaken an atomistic study to reveal at the ab-initio level the physics of the formation of ejecta when grooves are present in the free surface. This will be included as a framework in a multiscale study relating atomistic with the hydrodynamic scale formation of the ejecta.
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2 November 2020
SHOCK COMPRESSION OF CONDENSED MATTER - 2019: Proceedings of the Conference of the American Physical Society Topical Group on Shock Compression of Condensed Matter
16–21 June 2019
Portland, OR, USA
Research Article|
November 02 2020
Hydrodynamic and atomistic studies in support of high power laser experiments for metal ejecta recollection and interactions
Tomorr Haxhimali;
Tomorr Haxhimali
a)
1
Lawrence Livermore National Laboratory
, 7000 East Avenue, Livermore, CA 94550, USA
a)Corresponding author: [email protected]
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Marco Echeverria;
Marco Echeverria
2
Department of Material Science and Engineering, University of Connecticut
, 97 North Eagleville Road, Storrs, CT 06269, USA
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Fady Najjar;
Fady Najjar
1
Lawrence Livermore National Laboratory
, 7000 East Avenue, Livermore, CA 94550, USA
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Petros Tzeferacos;
Petros Tzeferacos
3
Department of Astronomy and Astrophysics, University of Chicago
, 54640 South Ellis Avenue, Chicago, IL 60637, USA
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Suzanne J. Ali;
Suzanne J. Ali
1
Lawrence Livermore National Laboratory
, 7000 East Avenue, Livermore, CA 94550, USA
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Hye-Sook Park;
Hye-Sook Park
1
Lawrence Livermore National Laboratory
, 7000 East Avenue, Livermore, CA 94550, USA
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Jon Eggert;
Jon Eggert
1
Lawrence Livermore National Laboratory
, 7000 East Avenue, Livermore, CA 94550, USA
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Channing Huntington;
Channing Huntington
1
Lawrence Livermore National Laboratory
, 7000 East Avenue, Livermore, CA 94550, USA
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Brandon Morgan;
Brandon Morgan
1
Lawrence Livermore National Laboratory
, 7000 East Avenue, Livermore, CA 94550, USA
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Yuan Ping;
Yuan Ping
1
Lawrence Livermore National Laboratory
, 7000 East Avenue, Livermore, CA 94550, USA
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Hans G. Rinderknecht;
Hans G. Rinderknecht
4
Laboratory for Laser Energetics, University of Rochester
, 250 E. River Road, Rochester, New York 14623, USA
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Alison M. Saunders
Alison M. Saunders
1
Lawrence Livermore National Laboratory
, 7000 East Avenue, Livermore, CA 94550, USA
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a)Corresponding author: [email protected]
AIP Conf. Proc. 2272, 120006 (2020)
Citation
Tomorr Haxhimali, Marco Echeverria, Fady Najjar, Petros Tzeferacos, Suzanne J. Ali, Hye-Sook Park, Jon Eggert, Channing Huntington, Brandon Morgan, Yuan Ping, Hans G. Rinderknecht, Alison M. Saunders; Hydrodynamic and atomistic studies in support of high power laser experiments for metal ejecta recollection and interactions. AIP Conf. Proc. 2 November 2020; 2272 (1): 120006. https://doi.org/10.1063/12.0000824
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