title: Plasmons in strongly coupled shock-compressed matter.
abstract: We present the first measurements of the plasmon dispersion and damping in laser shock-compressed solid matter. Petawatt laser produced K-α radiation scatters on boron targets compressed by a 10 ns-long 400 J laser pulse. In the vicinity of the Fermi momentum, the scattering spectra show dispersionless, collisionally damped plasmons, indicating a strongly coupled electron liquid. These observations agree with calculations that include the Born-Mermin approximation to account for electron-ion collisional damping and local field corrections reflecting electron-electron correlations.
authors.affiliation: Lawrence Livermore National Laboratory, Livermore, California 94551, USA.
authors.forename: P
authors.initials: P
authors.lastname: Neumayer
authors.forename: C
authors.initials: C
authors.lastname: Fortmann
authors.forename: T
authors.initials: T
authors.lastname: Döppner
authors.forename: P
authors.initials: P
authors.lastname: Davis
authors.forename: R W
authors.initials: RW
authors.lastname: Falcone
authors.forename: A L
authors.initials: AL
authors.lastname: Kritcher
authors.forename: O L
authors.initials: OL
authors.lastname: Landen
authors.forename: H J
authors.initials: HJ
authors.lastname: Lee
authors.forename: R W
authors.initials: RW
authors.lastname: Lee
authors.forename: C
authors.initials: C
authors.lastname: Niemann
authors.forename: S
authors.initials: S
authors.lastname: Le Pape
authors.forename: S H
authors.initials: SH
authors.lastname: Glenzer