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Title: Shock physics in warm dense matter: A quantum hydrodynamics perspective

Journal Article · · Contributions to Plasma Physics
 [1];  [2];  [1];  [3]
  1. Lawrence Livermore National Laboratory Livermore California USA
  2. Center for Advanced Systems Understanding (CASUS) Görlitz Germany, Helmholtz‐Zentrum Dresden‐Rossendorf Dresden Germany
  3. Institut für Theoretische Physik und Astrophysik Christian‐Albrechts‐Universität zu Kiel Kiel Germany
+ Show Author Affiliations

Abstract Warm dense matter (WDM), an exotic, highly compressed state of matter between solid and plasma phases, is of high current interest, in particular for astrophysics and inertial confinement fusion. For the latter, in particular the propagation of compression shocks is crucial. The main unknown in the shock propagation in WDM is the behaviour of the electrons since they are governed by correlations, quantum and spin effects that need to be accounted for simultaneously. Here we describe the shock dynamics of the warm dense electron gas using a quantum hydrodynamic model. From the numerical hydrodynamic simulations, we observe that the quantum Bohm pressure induces shear force that weakens the formation and strength of the shock. In addition, the Bohm pressure induces an electron density response that takes the form of oscillations. This is confirmed by the theoretical analysis of the early stage of the shock formation. Our theoretical and numerical analyses allow us to identify characteristic dimensionless shock propagation parameters at which the effect of the Bohm force is important.

Sponsoring Organization:
USDOE
Grant/Contract Number:
AC52-07NA27344
OSTI ID:
1840615
Journal Information:
Contributions to Plasma Physics, Journal Name: Contributions to Plasma Physics Journal Issue: 2 Vol. 62; ISSN 0863-1042
Publisher:
Wiley Blackwell (John Wiley & Sons)Copyright Statement
Country of Publication:
Germany
Language:
English

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