Observations of strong ion-ion correlations in dense plasmas

Ma, T.; Fletcher, L.; Pak, A.; Chapman, D. A.; Falcone, R. W.; Fortmann, C.; Galtier, E.; Gericke, D. O.; Gregori, G.; Hastings, J.; Landen, O. L.; Le Pape, S.; Lee, H. J.; Nagler, B.; Neumayer, P.; Turnbull, D.; Vorberger, J.; White, T. G.; Wunsch, K.; Zastrau, U.; Glenzer, S. H.; Doppner, T.

doi:10.1063/1.4872161

Title: Observations of strong ion-ion correlations in dense plasmas

Journal Article · Thu Apr 24 00:00:00 EDT 2014 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4872161· OSTI ID:1334521

Ma, T. ^[1]; Fletcher, L. ^[2]; Pak, A. ^[1]; Chapman, D. A. ^[3]; Falcone, R. W. ^[4]; Fortmann, C. ^[5]; Galtier, E. ^[2]; Gericke, D. O. ^[6]; Gregori, G. ^[7]; Hastings, J. ^[2]; Landen, O. L. ^[1]; Le Pape, S. ^[1]; Lee, H. J. ^[2]; Nagler, B. ^[2]; Neumayer, P. ^[8]; Turnbull, D. ^[1]; Vorberger, J. ^[9]; White, T. G. ^[7]; Wunsch, K. ^[10]; Zastrau, U. ^[11] more »

Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
SLAC National Accelerator Lab., Menlo Park, CA (United States)
AWE plc, Reading (United Kingdom); Univ. of Warwick, Coventry (United Kingdom)
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)
Univ. of Oxford, Oxford (United Kingdom)
GSI Helmholtzzentrum fur Schwerionenforschung, Darmstadt (Germany)
Max Planck Institut fur Physik komplexer Systeme, Dresden (Germany)
Tessella, 26 The Quadrant, Abington (United Kingdom)
SLAC National Accelerator Lab., Menlo Park, CA (United States); Friedrich-Schiller-Univ., Jena (Germany)

Using simultaneous spectrally, angularly, and temporally resolved x-ray scattering, we measure the pronounced ion-ion correlation peak in a strongly coupled plasma. Laser-driven shock-compressed aluminum at ~3× solid density is probed with high-energy photons at 17.9 keV created by molybdenum He-α emission in a laser-driven plasma source. The measured elastic scattering feature shows a well-pronounced correlation peak at a wave vector of k=4Å^–1. The magnitude of this correlation peak cannot be described by standard plasma theories employing a linear screened Coulomb potential. Advanced models, including a strong short-range repulsion due to the inner structure of the aluminum ions are however in good agreement with the scattering data. These studies have demonstrated a new highly accurate diagnostic technique to directly measure the state of compression and the ion-ion correlations. Furthermore, we have since applied this new method in single-shot wave-number resolved S(k) measurements to characterize the physical properties of dense plasmas.

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Research Organization:: Univ. of California, Berkeley, CA (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: NA0000910

OSTI ID:: 1334521

Journal Information:: Physics of Plasmas, Vol. 21, Issue 5; ISSN 1070-664X

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 15 works

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References (24)

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Measurement of temperature and density using non-collective X-ray Thomson scattering in pulsed power produced warm dense plasmas Valenzuela, J. C.; Krauland, C.; Mariscal, D. Scientific Reports, Vol. 8, Issue 1 https://doi.org/10.1038/s41598-018-26608-w	journal	May 2018
Electron-ion collision-frequency for x-ray Thomson scattering in dense plasmas Faussurier, Gérald; Blancard, Christophe Physics of Plasmas, Vol. 23, Issue 1 https://doi.org/10.1063/1.4939606	journal	January 2016
Measurement of ionic structure in isochorically heated graphite from X-ray Thomson scattering Lv, Min; Hu, Zhimin; Hou, Yong Physics of Plasmas, Vol. 26, Issue 2 https://doi.org/10.1063/1.5054088	journal	February 2019

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