Extent of validity of the hydrodynamic description of ions in dense plasmas
- Department of Physics, Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU (United Kingdom)
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
We show that the hydrodynamic description can be applied to modeling the ionic response in dense plasmas for a wide range of length scales that are experimentally accessible. Using numerical simulations for the Yukawa model, we find that the maximum wave number k{sub max} at which the hydrodynamic description applies is independent of the coupling strength, given by k{sub max}{lambda}s{approx_equal}0.43, where {lambda}{sub s} is the ionic screening length. Our results show that the hydrodynamic description can be used for interpreting x-ray scattering data from fourth generation light sources and high power lasers. In addition, our investigation sheds new light on how the domain of validity of the hydrodynamic description depends on both the microscopic properties and the thermodynamic state of fluids in general.
- OSTI ID:
- 21560001
- Journal Information:
- Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics (Print), Journal Name: Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics (Print) Journal Issue: 1 Vol. 83; ISSN 1539-3755
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CHARGED PARTICLES
COHERENT SCATTERING
COMPUTERIZED SIMULATION
DIFFRACTION
DIMENSIONS
FLUIDS
HYDRODYNAMIC MODEL
IONS
LASERS
LENGTH
LIGHT SOURCES
MATHEMATICAL MODELS
PARTICLE MODELS
PLASMA DENSITY
RADIATION SOURCES
SCATTERING
SCREENING
SIMULATION
STATISTICAL MODELS
THERMODYNAMIC MODEL
X-RAY DIFFRACTION