title: Transport properties of an asymmetric mixture in the dense plasma regime.
abstract: We study how concentration changes ionic transport properties along isobars-isotherms for a mixture of hydrogen and silver, representative of turbulent layers relevant to inertial confinement fusion and astrophysics. Hydrogen will typically be fully ionized while silver will be only partially ionized but can have a large effective charge. This will lead to very different physical conditions for the H and Ag. Large first principles orbital free molecular dynamics simulations are performed and the resulting transport properties are analyzed. Comparisons are made with transport theory in the kinetic regime and in the coupled regime. The addition of a small amount of heavy element in a light material has a dramatic effect on viscosity and diffusion of the mixture. This effect is explained through kinetic theory as a manifestation of a crossover between classical diffusion and Lorentz diffusion.
authors.affiliation: Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
authors.forename: Christopher
authors.initials: C
authors.lastname: Ticknor
authors.affiliation: Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
authors.forename: Joel D
authors.initials: JD
authors.lastname: Kress
authors.affiliation: Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
authors.forename: Lee A
authors.initials: LA
authors.lastname: Collins
authors.affiliation: CEA, DAM, DIF, 91297 Arpajon, France.
authors.forename: Jean
authors.initials: J
authors.lastname: Clérouin
authors.affiliation: CEA, DAM, DIF, 91297 Arpajon, France.
authors.forename: Philippe
authors.initials: P
authors.lastname: Arnault
authors.affiliation: CEA, DAM, DIF, 91297 Arpajon, France.
authors.forename: Alain
authors.initials: A
authors.lastname: Decoster