Nonisentropic Release of a Shocked Solid.

Heighway, P G; Sliwa, M; McGonegle, D; Wehrenberg, C; Bolme, C A; Eggert, J; Higginbotham, A; Lazicki, A; Lee, H J; Nagler, B; Park, H-S; Rudd, R E; Smith, R F; Suggit, M J; Swift, D; Tavella, F; Remington, B A; Wark, J S

Heighway, P G; Sliwa, M; McGonegle, D; Wehrenberg, C; Bolme, C A; Eggert, J; Higginbotham, A; Lazicki, A; Lee, H J; Nagler, B; Park, H-S; Rudd, R E; Smith, R F; Suggit, M J; Swift, D; Tavella, F; Remington, B A; Wark, J S.

Afiliação

Heighway PG; Department of Physics, Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom.
Sliwa M; Department of Physics, Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom.
McGonegle D; Department of Physics, Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom.
Wehrenberg C; Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94550, USA.
Bolme CA; Los Alamos National Laboratory, Bikini Atoll Road, SM-30, Los Alamos, New Mexico 87545, USA.
Eggert J; Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94550, USA.
Higginbotham A; York Plasma Institute, University of York, Heslington, York YO10 5DD, United Kingdom.
Lazicki A; Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94550, USA.
Lee HJ; SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA.
Nagler B; SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA.
Park HS; Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94550, USA.
Rudd RE; Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94550, USA.
Smith RF; Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94550, USA.
Suggit MJ; Department of Physics, Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom.
Swift D; Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94550, USA.
Tavella F; SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA.
Remington BA; Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94550, USA.
Wark JS; Department of Physics, Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom.

Phys Rev Lett ; 123(24): 245501, 2019 Dec 13.

Article em En | MEDLINE | ID: mdl-31922830

ABSTRACT

ABSTRACT

We present molecular dynamics simulations of shock and release in micron-scale tantalum crystals that exhibit postbreakout temperatures far exceeding those expected under the standard assumption of isentropic release. We show via an energy-budget analysis that this is due to plastic-work heating from material strength that largely counters thermoelastic cooling. The simulations are corroborated by experiments where the release temperatures of laser-shocked tantalum foils are deduced from their thermal strains via in situ x-ray diffraction and are found to be close to those behind the shock.

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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Phys Rev Lett Ano de publicação: 2019 Tipo de documento: Article País de afiliação: Reino Unido

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