Plasmons in Strongly Coupled Shock-Compressed Matter

P. Neumayer, C. Fortmann, T. Döppner, P. Davis, R. W. Falcone, A. L. Kritcher, O. L. Landen, H. J. Lee, R. W. Lee, C. Niemann, S. Le Pape, and S. H. Glenzer

Phys. Rev. Lett. 105, 075003 – Published 12 August 2010

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.

Received 19 April 2010

DOI:https://doi.org/10.1103/PhysRevLett.105.075003

Authors & Affiliations

P. Neumayer^1,*, C. Fortmann^1,2, T. Döppner¹, P. Davis^1,3, R. W. Falcone³, A. L. Kritcher¹, O. L. Landen¹, H. J. Lee⁴, R. W. Lee¹, C. Niemann^1,2, S. Le Pape¹, and S. H. Glenzer¹

¹Lawrence Livermore National Laboratory, Livermore, California 94551, USA
²Department of Physics and Astronomy, University of California, Los Angeles, California 90095, USA
³Department of Physics, University of California, Berkeley, California 94720, USA
⁴SLAC National Accelerator Laboratory, 2575 Sand Hill Road Menlo Park, California 94025, USA

^*Present address: GSI, 64291 Darmstadt, Germany.

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Vol. 105, Iss. 7 — 13 August 2010

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