X-ray scattering measurements of strong ion-ion correlations in shock-compressed aluminum

Ma, T.; Doppner, T.; Falcone, R. W.; Fletcher, L.; Fortmann, C.; Gericke, D. O.; Landen, O. L.; Lee, H. J.; Pak, A.; Vorberger, J.; Wunsch, K.; Glenzer, S. H.

doi:10.1103/PhysRevLett.110.065001

X-ray scattering measurements of strong ion-ion correlations in shock-compressed aluminum

Journal Article · Tue Feb 05 00:00:00 EST 2013 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.110.065001· OSTI ID:1334508

Ma, T. ^[1]; Doppner, T. ^[2]; Falcone, R. W. ^[3]; Fletcher, L. ^[3]; Fortmann, C. ^[4]; Gericke, D. O. ^[5]; Landen, O. L. ^[2]; Lee, H. J. ^[6]; Pak, A. ^[2]; Vorberger, J. ^[5]; Wunsch, K. ^[5]; Glenzer, S. H. ^[2]

Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); University of California, Berkeley
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Univ. of California, Berkeley, CA (United States)
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Univ. of California, Los Angeles, CA (United States)
Univ. of Warwick, Coventry (United Kingdom)
SLAC National Accelerator Lab., Menlo Park, CA (United States)

Here, the strong ion-ion correlation peak characteristic of warm dense matter (WDM) is observed for the first time using simultaneous angularly, temporally, and spectrally resolved x-ray scattering measurements in laser-driven shock-compressed aluminum. Laser-produced molybdenum x-ray line emission at an energy of 17.9 keV is employed to probe aluminum compressed to a density of ρ > 8 g/cm³. We observe a well pronounced peak in the static structure factor at a wave number of $$\textit{k}$$ = 4:0 Å^-1. The measurements of the magnitude and position of this correlation peak are precise enough to test different theoretical models for the ion structure and show that only models taking the complex interaction in WDM into account agree with the data. As a result, this also demonstrates a new highly accurate diagnostic to directly measure the state of compression of warm dense matter.

View Accepted Manuscript (DOE)

Research Organization:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Univ. of California, Berkeley, CA (United States)

Sponsoring Organization:: USDOE; USDOE Laboratory Directed Research and Development (LDRD) Program

Grant/Contract Number:: AC52-07NA27344; FG52-06NA26212

OSTI ID:: 1334508

Alternate ID(s):: OSTI ID: 1102032

Journal Information:: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 6 Vol. 110; ISSN 0031-9007; ISSN PRLTAO

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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